[HN Gopher] Ask HN: Seeking ideas for preschool/school projects
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       Ask HN: Seeking ideas for preschool/school projects
        
       I'm reaching out for some creative suggestions. I have a 4-year-old
       and a 7-year-old attending preschool/school, and both sets of
       teachers have asked for ideas from parents for skills they could
       show or projects they could help with in the classroom.  I have a
       background in computer science, primarily focused on web
       development these days. Additionally, I have loads of potentially
       useful toys at home, including a 3D printer, DIY CNC mill, webcams,
       Raspberry Pis, old laptops, etc.  What are some engaging activities
       or projects I could bring to either level of the schools that would
       be both fun and educational for the kids? Particularly ideas we
       could do as a class vs breaking into smaller groups.  I have had a
       couple of ideas so far - Processing based art interactive which the
       kids can suggest updates for and instantly see the changes. -
       Something RTLSDR based, so we can play with antennas and catch some
       radio waves.  Looking forward to your creative ideas and
       suggestions, thank you.
        
       Author : ElCapitanMarkla
       Score  : 91 points
       Date   : 2024-05-07 23:04 UTC (3 days ago)
        
       | anishkothari wrote:
       | There are a lot of activities on the CS Unplugged website:
       | https://www.csunplugged.org/en/
       | 
       | https://classic.csunplugged.org/activities/
       | 
       | I also like the self-paced courses on Code.org:
       | https://code.org/student/elementary
       | 
       | My kindergartner has access to Tynker through school. Maybe your
       | school district has a license to something similar?
       | 
       | Good luck!
        
         | al_borland wrote:
         | code.org has an unplugged section as well.
         | 
         | https://code.org/curriculum/unplugged
        
       | brudgers wrote:
       | My big suggestion is ask your younger child what they would like
       | you to do first. Then separately ask your older child what they
       | would like you to do.
       | 
       | Do them both. Good luck.
        
       | contingencies wrote:
       | Pottery plus blinkenlights.
       | 
       | 3D printer and CNC are sort of too specific ... at that age, for
       | most projects, cardboard prototypes are better (cheaper, faster,
       | more rewarding, more parallel). Pottery is even better though
       | because it becomes a permanent piece and lets you do painting as
       | well.
       | 
       | In later school maybe basic robotics works with a pi... lesson by
       | lesson skill building like "synth speech", "parse speech",
       | "sensor data acquisition", "internet query", "database 101",
       | whatever...
        
       | p0d wrote:
       | I'm a lecturer and it strikes me you are talking about some
       | pretty advanced stuff there:-)
       | 
       | I would go for a hands-on, making exercise. I think my son was
       | around 7 when I made a crystal radio with him. He was pretty
       | bored until he heard voices in the earpiece. I will never forget
       | the look of surprise on his face. You are an extremely curious,
       | independent learner. Most students are not in my experience. The
       | biggest challenge in education is moving the least able, to the
       | most able forward. So consider activities that work for all. You
       | suggested group work which is a good idea as you can assign
       | members specific tasks.
        
         | anonymousDan wrote:
         | That sounds great but I have no idea how you would make such a
         | thing. Is there a guide somewhere? Would love to try with my 6
         | year old.
        
           | rjsw wrote:
           | This book [1] (PDF) was what I used to start making radios as
           | a child.
           | 
           | [1] https://www.worldradiohistory.com/BOOKSHELF-
           | ARH/Technology/M...
        
       | saulrh wrote:
       | Minecraft has a mod called ComputerCraft, which adds lua-powered
       | computers to the game. They can read various state from the
       | world, like redstone levels and chest contents, and move things
       | between chests and set redstone outputs and play sound and etc.
       | You can also upgrade them into turtles, which can move around and
       | mine blocks and stuff. It's a nice environment for basic robotics
       | programming with immediate feedback.
       | 
       | (IIRC there's theoretically an "educational edition" of this, but
       | I don't know if I'd put much stock in that; you're close enough
       | and personalizing the learning enough that you're probably better
       | off just using the normal mod.)
        
       | drmbradley wrote:
       | Not my resource but a neighbour and friend of mine built this
       | free resource for Machine Learning education
       | https://machinelearningforkids.co.uk/#!/about
       | 
       | The tool is entirely web-based and requires no installs or
       | complicated setup to be able to use.
        
       | treme wrote:
       | https://www.youtube.com/watch?v=zBzxyUkKo_s
       | 
       | Dig around Bret Victor's Dynamicland
        
       | blutack wrote:
       | Water bottle rockets that have to carry and land an egg without
       | cracking it are fun, and the launcher except pump can be 3d
       | printed. The kids can make the rest of the rockets out of
       | cardboard/foam/plastic bag parachutes etc).
        
       | SebFender wrote:
       | Kinda out of context, but it's funny how I played with my kid for
       | years around computers, games, code camps and so on since he was
       | 3yo - now at 20 he has no interest whatsoever in "coding" but is
       | absolutely absorbed by chemistry - now in pharmacology in
       | university. Anyway, cheers on the project - kids and the time we
       | spend with them is so important.
        
       | A_D_E_P_T wrote:
       | What's fun, and very interesting for both children and adults, is
       | going zero tech. In fact, go back to prehistory.
       | 
       | You start with the different properties of stones. If you have
       | flint, obsidian, granite, quartzite, gypsum, and calcite in your
       | region -- find them together. If not, buy them. Teach your kids
       | about their different properties, and how they were used to make
       | hand tools.
       | 
       | Then, the different properties of woods. Hard, soft, green, etc.
       | Show them why ash and hickory (and especially negatively buoyant
       | _cornus mas_ , if you can get it,) make much better tools than
       | pine. Make wooden spears and harden their points in a fire you
       | make with stone tools.
       | 
       | Then integrate the two -- use stone tools to make other stone
       | tools, and combine stone and wood into wooden-handled stone
       | tools. Make bows and stone-tipped arrows, and use them. Go
       | foraging with the children, and teach them how to cook
       | vegetables, fish, and meat over an open fire. (Note: Beware
       | mushrooms unless you _really_ know what you 're doing.)
       | 
       | In short order, the children will understand how men have lived
       | for hundreds of thousands of years. Then they can advance into
       | copper smelting, pottery, building carts and canoes, making nets
       | from natural fibers, writing on clay tablets, and so forth...
       | 
       | I feel that, as with math where the optimal method is to start
       | with Euclid and then progress through the ages, one ought to
       | learn to be in the world by moving through man's stages of
       | development. At 4-7, they're in their prime for traipsing around
       | the woods and making stone tools.
        
         | tasuki wrote:
         | > Beware mushrooms unless you really know what you're doing.
         | 
         | If you know what you're doing, you should know that children
         | generally shouldn't eat wild mushrooms - they're hard to
         | digest.
        
           | A_D_E_P_T wrote:
           | I live in a pretty rural place, and around here they sell
           | wild mushrooms in supermarkets. Sometimes the mighty porcini
           | ( _boletus_ sp.) is available -- but there are frequently
           | chanterelles and morels available, and sometimes other types.
           | Kids and even toddlers eat them all the time, though
           | admittedly they 're usually well cooked, or dried and then
           | cooked, or even cooked and then pureed.
           | 
           | I don't recommend doing it with kids (or at least _eating_
           | them with kids) but mushroom foraging is a lot of fun.
        
       | usgroup wrote:
       | I focus on just using stuff with my kids. Things like piloting a
       | remote control car is hard for a 4 year old, but they still want
       | to do it. Playing Tetris on a slow speed, naughts and crosses,
       | simplified chess, making objects out of paper, painting acorns,
       | building train tracks, Lego, and so on.
       | 
       | You need engagement first, in order to cause learning, and I
       | guess any process that causes both learning and engagement makes
       | sense, but in my experience at young ages, that's more likely to
       | be on the doing/using rather than creating side of the spectrum.
        
         | ljlolel wrote:
         | You can teach a 4 year old chess I've done it many times
         | (patiently)
        
           | ddol wrote:
           | I disagree. You can teach a 4-year-old the moves each chess
           | piece can make, but expecting them to absorb strategy, or to
           | visualise 2+ moves into the future is an unfair burden.
           | 
           | The following are much better perfect information games for
           | kids. I play each with my kids and have listed the age when
           | they were able to strategise 2+ moves ahead:
           | 
           | - Gobblet Gobblers (4)
           | 
           | - Onitama (6)
           | 
           | - Hive (8)
        
             | smugma wrote:
             | Gobblet is a great game, ages 4- seems right. My 9 and 11
             | year olds still play occasionally.
             | 
             | Hive v Onitama, is Hive better for older kids or just more
             | complex?
        
         | fuzztester wrote:
         | >Lego
         | 
         | Reminded me of the Logo language and its turtle graphics. It
         | was made for kids, IIRC.
         | 
         | Used it some, early on. Fun.
         | 
         | There are free versions.
         | 
         | Also, Python has a turtle graphics module, like Logo.
        
       | MarcScott wrote:
       | You could look into setting up a Code Club.
       | 
       | https://codeclub.org/en/
       | 
       | And we have a tonne of resources at
       | https://projects.raspberrypi.org/en
       | 
       | Playing around with teachable machine is also a tonne of fun for
       | kids, and MIT have a platform called RAISE playground that has
       | Scratch with teachable machine extensions
        
       | bbbbbenji wrote:
       | A while ago, I developed a decibel meter designed like a traffic
       | light for a preschool classroom. The device visually represents
       | different noise levels by changing colors and can also be
       | manually operated via IR remote. I've shared my project, along
       | with several suggestions for its educational use in the
       | classroom, on this here:
       | https://makerworld.com/en/models/186425#profileId-205268
        
       | SJC_Hacker wrote:
       | Catapults
        
         | beeskneecaps wrote:
         | Yeah! And surgical tubing slingshots. A very small construction
         | project where they can learn to use a speed square. Tune the
         | slingshot or catapult until it can launch a handball into a 1x1
         | meter square some distance away. Also a great way to wear the
         | kids out having to run and collect the ball.
        
       | nycdatasci wrote:
       | Maybe just give some interactive demos to the kids showing the
       | power of modern tech?
       | 
       | Animate drawings: https://sketch.metademolab.com/
       | 
       | Generate music, based on ideas from the kids using Suno or Udio.
       | 
       | Generate a story with GPT/Claude where kids in the classroom are
       | the characters. Create images using Dall-e 3 and print copies so
       | the kids can take it home.
       | 
       | This would probably be of interest to many parents and teachers
       | too.
        
         | Franzeus wrote:
         | Can confirm the animated drawings. I built a company
         | (dibulo.com) which does that (Age 3-8 mostly, but also adults
         | and seniors seem to like it). We love that kids spend more time
         | coloring than looking at the screen (although it is always a
         | magic moment). We also do not have a lot of interaction with
         | the screen itself and soon gonna add more and more educational
         | elements to it.
        
       | brewtide wrote:
       | This isn't quite the example list that you are looking for as the
       | mentioned 'projects' in the following list were done at home,
       | with a lot more timeframe allowed to discuss / work on them. My
       | children are now 8 and 10, but we have been doing such similar
       | things around the home since they were of similar ages to yours.
       | A few of the things that we have done, and became large hits
       | (hardly all computer related, but I think perhaps it's a
       | mentality you are aiming for -- learn, create!)
       | 
       | * Augmented reality sandbox -- The software is still out there.
       | You may have already seen these in action, but it really is not
       | too terrible difficult to build a setup yourself. Old PC with
       | some sort of GPU (for the rain effect, which is the coolest
       | aspect..), a microsoft kinect, and a whatever quality projector.
       | This went over super well in my living room when the kids were 4
       | & 6 -- And we recently re-built it 4 years later -- The 4 year
       | old didn't even remember it, but I have lots of pictures of her
       | loving it at 4!). Super cool, super interactive, and a good tie
       | in of 'building things using old technology'.
       | 
       | * Grabbing weather from passing NOAA satellites! Build a simple
       | di-pole antenna using whatever materials (we used copper pipe).
       | Involves math and science discussions, and also may get the
       | little ones interested in the weather. RTLSDR, some copper pipe,
       | a laptop, some software, and knowing when to be tuning in. A good
       | example of how 'the first time you try something it may not work
       | as well as you'd like', tweak away from there. Pretty exciting to
       | pull a picture from a satellite line by line. Listen to the
       | signal -- Memories of dialup will immediately be there.
       | 
       | * Use a streaming camera and speed-cam software to create a setup
       | to see 'how fast they can run'. Process and result and
       | discussions about how this setup works can lead to fun insights.
       | 
       | * Stop motion video creation -- Probably the best for your use
       | case, have kids use technology to create their own stop-motion
       | videos. I remember doing this back around the ages of 7, but at
       | that time it was frame by frame using construction paper and a
       | giant VHS camera on a tripod. Techniques have not changed really,
       | but the setup to do stop motion on small scale kid levels is
       | basically free. Shows how iterative processes add up.
       | 
       | * Build a bubble making machine -- I imagine you may have a box
       | of old computer fans, motors, etc, etc. Build a bubble machine!
       | Have them try to design one out. 7 year olds likely able to
       | really design rough concepts, 4 year old can help assemble and
       | most importantly, spill the bubble liquid all over the place! If
       | you want to get fancy, have it become a motion activated bubble
       | machine using motion detection via some ESP32 setup or whatever.
       | "This is what we are trying to do, these are the resources on
       | hand, how do YOU think we could make this happen?".
       | 
       |  _String up a wire, bust out the RTLSDR (or other SDR stuff) and
       | try to listen to some shortwave from around the world or your
       | area. Pulling whatever from the air always seems basically magic
       | to all kids (and honestly, it 's pretty much magic to myself as
       | well).
       | 
       | _Not really an able to do at school thing, but son build an AM /
       | FM radio kit that had your typical Chinese 'instructions' and was
       | able with a tiny bit of help to solder everything to the board
       | and have it work first try. As someone else mentioned, it went
       | "Lots of interest > I'm kind of tired of this > I'm so close I
       | will push on > Oh my goodness, the radio works, this is the
       | best". I'm a huge fan of trying to install the 'keep at it' or
       | make changes to make things better way of teaching and learning.
       | 
       | * School/Maybe -- * Make electromagnets by wrapping some wire
       | around some good sized nails, put a switch on it, and both
       | mentioned age groups will likely find it super cool and is
       | certainly electronic/science based.
       | 
       | Just a few of the things we have done around my house thus far
       | and have shown a lot of engagement and interest, and helped to
       | create that 'spark' about wanting to learn more stuff.
       | 
       | I think this summer will bring more radio related things: Sensors
       | to monitor humidity levels to be graphed from our garden,
       | building some actual meshtastic nodes to chat to other people way
       | across town over the airwaves, etc. My 10 year old has started
       | designing a project to "automatically lower sunglasses over his
       | glasses if it is sunny", and I hunch we will finally acquire a
       | 3df printer to see this project through to completion. I'm hardly
       | a programmer, but he did a '30 days lost in space' kit last year,
       | and between the information he started poking with through that,
       | and the assisting of some AI, I'm sure we can work together to
       | pull his implementation off, however he goes about it.
       | 
       | As others said, it's great to see trying to share the desire to
       | learn into the little ones -- They are _way_ more capable than
       | society lets on, you just have to get them interested in things
       | and they are astounding tiny sponges! Good luck!
        
         | salad-tycoon wrote:
         | Re: AR sandbox.
         | 
         | Wow!
         | 
         | So cool, I want one. Watch the video here (1) it gets really
         | neat at 1:43.
         | 
         | I want to do this.
         | 
         | For this who don't know, cheap projectors these days are quite
         | decent. I got one for $75 and we use it as the main screen for
         | the kids. During very sunny days it does not work well, which
         | is a benefit. If it's too bright to watch TV then go outside! I
         | have one like this and I love it, plenty of other vowel-poor
         | companies make similar. (2)
         | 
         | There is also a makers magazine that has all kinds of ideas.
         | Pretty cheap through discount magazine. https://makezine.com/
         | 
         | 1 https://web.cs.ucdavis.edu/~okreylos/ResDev/SARndbox/
         | 
         | 2 https://meh.com/forum/topics/vankyo-
         | performance-v600-native-...
         | 
         | 3 system 76 instructable
         | https://www.instructables.com/Augmented-Reality-Sandbox/
        
           | brewtide wrote:
           | Thanks for providing the links I did not -- Kids were waking
           | up and I was trying to bang through it!
           | 
           | One of the things that I always messed up when calibrating
           | it, is the step using the CD-on-a-stick part. You need to do
           | this calibration phase _changing the z axis_ on different
           | points. Do one low. Do one medium, do some  'high'. This is
           | how the system defines it's 'skew' of projection when it
           | comes to the different heights/levels -- and if you do this
           | step all roughly on the same 'z' plane, it will _work_ , but
           | it will not be anywhere near as accurate / magical feeling.
           | The instructions I believe are hazy on this critical part of
           | the setup.
           | 
           | We always used blocks / things covered with white rags
           | instead of sand. Far easier to justify building over the
           | living room table this way, and makes for a quick clean up
           | process!
           | 
           | It's 100% super cool. Also, as you said, we use an $89 3
           | years ago projector. It is NOT a short-throw projector, but
           | mounted roughly 6-7' above the surface. The kinect was
           | mounted on a yard-stick hanging slightly down below so it's
           | field of view covers just that of the table itself.
           | 
           | It's a super neat end result; and can be decently frustrating
           | during the calibration phases and software setup, but is
           | worth it!
        
       | jacknews wrote:
       | For such young kids, unless they're prodigies, it should be very
       | much hands-on rather than anything too abstract.
        
       | deadbabe wrote:
       | Build and fly a kite!
        
       | firesteelrain wrote:
       | 1. Snap circuits. 2. Legos. 3. Straw Rockets
       | (https://www.jpl.nasa.gov/edu/learn/project/make-a-straw-
       | rock...). 4. 100 yard paper rocket launcher
       | (https://www.instructables.com/100-Yard-Paper-Rocket-
       | Launcher...). 5. Alka Seltzer Rockets.
        
       | zirkuswurstikus wrote:
       | Hi, With my 7 years old I started to thinker with
       | https://www.scratchjr.org/. She like to create short movies with
       | it. The next level will be https://sonic-pi.net/
        
       | lebuffon wrote:
       | The 4 year olds may be too young,but I am a big fan of teaching
       | how we got here.
       | 
       | I gave a 6 session course to a homeschool coop on the History of
       | Technology starting from stones and moving through bronze age,
       | iron age, steam power, electricity, telegraph demo (big hit)
       | radio and TV and early computers.
       | 
       | (I think Engineering schools should have a course on tech
       | history)
        
         | leobg wrote:
         | Sounds super interesting. Any notes or slides or anything you
         | can share?
        
       | digitaltrees wrote:
       | Kids love a projector that responds to their movements. So a
       | movie of fish swimming that respond as the kids run around in the
       | water.
       | 
       | I saw a cool one that had a water fall on a wall that became a
       | river on a floor and the kids could take cushions and divert the
       | river by blocking its flow. The 7 year olds would like that.
       | 
       | 4 year olds like physical challenges. So you could use the
       | projector to do a dynamic hop scotch or jumping game with Lilly
       | pads.
       | 
       | I am actually not a big fan of getting kids involved with devices
       | though. I think they need to learn to play in groups, spend time
       | outside, and learn to be as physically capable as possible.
       | 
       | I think if you use tech it would ideally be to teach them a rule
       | based team game where they have to work together, user their
       | imagination and solve a problem.
        
       | Modified3019 wrote:
       | Have them try to ID common yard broadleaf "weeds", which imo have
       | rather nice (if small and hard to notice) flowers. Learning
       | things like:
       | 
       | 1. What conditions they like
       | 
       | 2. How they behave over time
       | 
       | 3. What insects are attracted to them or eats them
       | 
       | ...puts them in touch with the world.
       | 
       | IDing grasses is much harder, even for me unless it has a
       | seedhead out or you have a microscope and know how to use a
       | species identification key, so I wouldn't bother with those.
       | 
       | PlantNet.org has a pretty nice app to assist ID with photo, but
       | you can't take the first result at face value.
        
       | atmosx wrote:
       | Treasure hunt creation. With a bit of tech and imagination you
       | can recreate multiple worlds and adventures. Especially now with
       | audio/AI voices and LLMs, you can recreate narrations by
       | Dumbledore, Merlin, old school British wizards, etc.
        
       | underlipton wrote:
       | Something perhaps a bit involved: 3D printing custom "counting"
       | aids. I remember having the block sets that represented 1s
       | (single, small blocks), 10s (a stack of them), 100s (a 10x10
       | plane), and 1000s (a solid 10x10x10 block) in class. Could make
       | them something other than plain blocks, perhaps little figurines
       | (apples? puppies?). Or take suggestions from the kids. Maybe
       | something more relevant for the older kids. Then bring the 3D
       | printer in and explain how it works. Making that connection
       | between learning, tool-making, agency, and of course the specific
       | technology itself.
        
       | delfinom wrote:
       | You want to guide the kids to explore the world and creativity
       | while having fun.. Not put them through a college maker club.
        
       | abecedarius wrote:
       | There's a book _Math from Three to Seven_ which may be very
       | relevant. Of course you 're talking about more than math.
       | 
       | https://www.semanticscholar.org/paper/Math-from-Three-to-Sev...
        
       | sandworm101 wrote:
       | Kids have voices, which they can control very well. Setup a mic,
       | link it to a occiliscope-style display, the bigger the better.
       | Teach them the difference between pitch and volume. They will
       | enjoy "seeing" their own voice. And maybe some we learn about
       | being quiet while others have a go.
        
         | gus_massa wrote:
         | Add some instruments, like a guitar and a drum.
         | 
         | There are a few osciloscopes and espectrogram online, that use
         | the nic of the computer.
        
       | lubujackson wrote:
       | A lot of these ideas are really advanced or technically hard to
       | setup. There are a few books aimed at teach kids coding concepts
       | without actually getting into coding.
       | 
       | I'd suggest make a simple maze on a piece of paper. Have a
       | "robot" that will go through the maze they you will "program" to
       | solve the maze. Then have the kids vote on the steps to take, and
       | write them down as the program. Show then how the program will
       | run.
       | 
       | Inevitably they will hit a wall or get turned around so show them
       | how to debug the program and fix it iteratively. Lots of fun,
       | interactivity and real programming concepts!
        
       | nanomonkey wrote:
       | Building a terrarium out of plexiglass and silicon sealant is a
       | fun project for multi age groups. The older kids can do
       | interesting math projects like "calculate the volume of the
       | aquarium" or "calculate the total cost of parts cut at the
       | hardware store". Then both groups can go out into a park or
       | wilderness area and collect insects, moss, plants, soil, rocks
       | and amphibians to put in the terrarium after it's built. You can
       | collect these in mason jars or recycled bottles with holes poked
       | in the lids (when necessary). If you have a microscope or
       | handheld lens you can look at pond water or found objects to
       | observe what is hidden to the naked eye. Teaching kids how to do
       | field reports and write their observations, make drawing, etc.
       | The older kids can give lessons and teach the younger ones.
        
         | throwup238 wrote:
         | _> If you have a microscope or handheld lens you can look at
         | pond water or found objects to observe what is hidden to the
         | naked eye._
         | 
         | Decent electronic field microscopes are only like $30-40 on
         | Amazon. They broadcast a Wifi network that you connect to on
         | your phone and use an app to view the image, take photos, etc.
        
       | wslh wrote:
       | YMMV: kids are not surprised by computers anymore since they are
       | pervasive in their lifes. A 3D printer is amazing but it could be
       | really slow I would prefer robots/cars ala Logo turtle. A friend
       | of mine played with Maley Makey. Beyond computers chemistry,
       | physics, magic...
        
       | nrjames wrote:
       | How about hooking a camera up as input to some generative art
       | algorithms in p5.js, Processing, or similar. Kids move/dance in
       | front of the camera and the results are projected on an adjacent
       | screen in realtime. Then you can save the pieces they generate
       | and have a few of them printed!
        
       | neilv wrote:
       | If they haven't seen a 3D printer or CNC mill work before, that
       | might be a good demo for preschool, if you can make something
       | really fast on it, that they can see evolve over a few minutes.
       | 
       | So they can see it, maybe ask teacher in advance whether they can
       | stand around the table you've set up on, or what their seating
       | arrangement is (on carpeted floor, movable low chairs, circle of
       | chairs, array of desks, etc.).
       | 
       | Beware that 3D printers can aggravate respiratory problems, so
       | maybe enclosed and ventilation hose to window. With CNC, you have
       | to watch out for metal filings that can poke kids (and get
       | transferred to eyes, etc.), or maybe short later electronics.
       | 
       | Bonus if you have time to show them one predetermined object,
       | then go to make another object that has some choice for them in
       | the design. Maybe you're making a cartoon character figure on a
       | large 3D modeling thing (very quickly, speedrunning it) and you
       | can ask them about the expression and things. Or maybe something
       | for their teacher's, like a 3D "nameplate" for their desk, with
       | some options for customization kids can choose, like font or
       | decorations you put on it. (Unfortunately, probably can't do one
       | of the kids' names, unless you brought enough print time for
       | everyone, but having them make a personalized gift for their
       | shared non-kid is good.) Try to think of things they can't do
       | with poster paint, glue, and macaroni, without discouraging those
       | media.
        
       | neilv wrote:
       | If you can obtain a microscope with a projector/display they can
       | all see at once, and have a bunch of familiar sample objects that
       | get non-intuitive under the microscope, they might really like
       | that. Especially if you can do it with progressive wide range of
       | magnification.
       | 
       | For each sample, you could show it to them by eye, ask them what
       | it is, maybe pass it to one of them, ask them what it is
       | (including everyone shouting out the answer, like it's a game,
       | depending on age). Then you show them on lowest magnification.
       | Then you increase magnification. This might be new to them and
       | break their brains in a good way.
       | 
       | This can get into vague overview about how big things are made up
       | of smaller things, that look different when you look closely.
       | 
       | You can also talk about seeing more detail of things when you're
       | close to them than when you're far away, which is more intuitive,
       | though I don't know whether this will confuse them about distance
       | and too much about optics at once.
       | 
       | Once they are starting to get magnification, you can also put a
       | sample _unknown_ to them under max magnification, so they can
       | only see the highly magnified display of it, and make a guessing
       | game about what it is. Progressively lower magnification, whether
       | or not someone guesses right, so they see that progression
       | regardless, and it also makes a reveal of the answer to the game.
        
       | neilv wrote:
       | Preschool, they're hopefully very restricted on screen time, and
       | might not want to encourage that.
       | 
       | With a bit older kids, once they're all allowed to use
       | smartphones, tablets, or video games, showing them they could
       | make a game, using kind of pedagogic morphs world platform (maybe
       | Squeak or Scratch), could be great. You can let them show them
       | something like how to make a car or character of shapes and make
       | it move somehow, then ask for more ideas and live-implement them.
       | (Try for direct manipulation and concrete and visual, minimizing
       | textual/block code as much a possible.)
        
       | jojohohanon wrote:
       | My 1st grader loooves tape. And dolls. And we order Amazon
       | regularly. We have purchased one of the simple cardboard knives.
       | 
       | The simple level is to turn the Amazon boxes into doll houses.
       | 
       | Slightly more advanced is to make furniture for the dolls. Like a
       | simple shoebox quickly becomes a Barbie closet.
       | 
       | For bigger boxes, given the right shape, it is easly to cut and
       | fold a high hair.
        
       | cclark00 wrote:
       | Scale model of the solar system!
       | https://www.exploratorium.edu/explore/solar-system/activity/...
       | 
       | Have each kid 'adopt' a planet, give them the materials to
       | construct the planet at the appropriate scale and they tell the
       | group 5 fun facts about their planet when the group walks from
       | Sun to Pluto. It is a WHOA experience for kids and adults about
       | the emptiness of space. Scale for the stamina of your kid group,
       | Pluto is way out there.
        
       | dbcurtis wrote:
       | So... one thing I can say from experience is that you need to be
       | aware of the motor skill limitations of the under 12 set. There
       | really is something that happens around age 12 that causes a
       | quantum leap in fine motor skills. So... tune your projects to
       | minimize frustration around that. I learned that the hard way by
       | seeing a selection of my projects randomly fall one side or the
       | other of that motor skill limitation because I was clueless when
       | I designed the experiments.
       | 
       | Now to your direct question: Once upon a time I did a 10 week
       | basic electricity class for about 8 kids of about 7 years old.
       | Yes, it was pretty basic. One thing I took advantage of was that
       | Harbor Freight was running a deal where you could get a multi-
       | meter for US$3. So... I gave one to every kid.
       | 
       | First lesson was "conductors and insulators" -- I can't remember
       | how I explained the concept to 7 year olds, but the lab was a
       | hoot. I had a bucket of stuff like nails, bits of cloth, an
       | apple, etc, just random stuff. And a dish of salt, and a dish of
       | water. Use the Ohmmeter to find out what is a conductor and what
       | is an insulator. After everyone had discovered that the dish of
       | salt and the dish of water were both insulators.... I poured some
       | water into the salt. Woah!!! It conducts! What's up with that? By
       | the end of the lab I had totally lost control and the kids were
       | raiding the fruit plate in the kitchen... "Is a banana a
       | conductor?" ... followed by vigorous stabbing of meter probes.
       | Anyway, the teachers you are working with may not be so cool with
       | the losing-control-of-the-class part, but I count that as a
       | metric of success.
       | 
       | Another lesson that was very popular, but required too much motor
       | skill, is that I had rounded up some 7-segment LED displays, and
       | some 8-gang DIP switches. (We had built a single LED circuit in a
       | previous lesson.) I had them build up a circuit where they could
       | control each segment with it's own switch (hint: prototyping
       | boards are beyond 7yo motor skills...we had enough parents to
       | help with the wiring...) After it worked, I had them make numbers
       | by setting switches. Then I asked them to invent other displays,
       | like find "letters" or just fun shapes. Then... I told them to
       | look around the house, and their own house when they got home, to
       | find number displays. Like on the microwave oven, etc. You could
       | sense the real "Wow, now I understand this!" moment when they
       | realized the basic operation of a common part of their world.
       | 
       | Bottom line: If you can find a way to help them understand even
       | just a little bit of how their world works, it will be a popular
       | experiment.
        
       | linuxftw wrote:
       | How about something that doesn't involve electronic technology?
       | You might be able to teach 4 year olds how to fold paper
       | airplanes (maybe printing off some pages with fold lines so they
       | can easily follow along). For the 7 year olds, teach them how to
       | play Yahtzee.
        
         | jkestner wrote:
         | Paper airplanes are a rich medium. It's fast and fun to get
         | results, and quick to iterate on improvements. You can start to
         | fold in physics/aerodynamic lessons and introduce them (without
         | a lecture) on how to think like an engineer when you add weight
         | to the front, or flaps to the wings, experiment with number of
         | folds, etc.
        
       | heavyset_go wrote:
       | Take them outside and play with drones or RC cars. Stick a camera
       | on them.
       | 
       | There's a million different lessons you can teach about them,
       | point is letting everyone have fun and possibly sparking interest
       | in some of them.
       | 
       | Don't sit them in front of a computer screen or expect them to
       | sit through a lecture.
        
         | jkestner wrote:
         | In my experience, kids already get plenty of opportunities for
         | screen-based STEM stuff. Mine have Hour of Code that offers
         | block programming tutorials that are relatively fun. If they're
         | anything like we were, they'll self-teach computer stuff when
         | they're ready.
         | 
         | So I don't do much of that, and instead find other, more hands-
         | on things I'm curious about and we can explore together.
        
       | sycren wrote:
       | You could consider doing a mini hackathon with the kids whereby
       | the aim is to create a board game of some kind. Have the kids
       | design the game on paper or card,then at the end use your cnc
       | mill to create the boards, tiles, player pieces etc. You could
       | then use the world cafe (https://toolbox.hyperisland.com/world-
       | cafe) facilitation method for all the teams to explain their
       | games to each other and recommend improvements. You could even
       | show them how to use chatgpt to take their game ideas and flesh
       | them out at a later stage (tutorial, rules etc.)
       | 
       | This idea would allow them to create something fun which is their
       | own, that they can keep in the classroom and play with. It may
       | also make them think of what other games they can create in the
       | future.
        
       | jkestner wrote:
       | I lead a makerspace at my kids' elementary school. We do no
       | coding or modern making, or whatever it is adult nerds like to
       | play with. Mostly because this age group can't manage it,
       | especially in 40 minute session, and I'm competing with a Lego
       | corner. Mostly we try to get new views on the natural world and
       | get exposed to different tools.
       | 
       | This week, we managed to bang out some bee houses of some scrap
       | lumber I had. We learned about why mason bees are great, and got
       | to use power tools in the library. They had so much fun and we
       | were goal-oriented, so that even the troublemakers among them
       | were helpful.
       | 
       | The most engaging activity (especially for younger grades) was a
       | bunch of light bulbs, batteries and switches, all mounted on wood
       | tiles and connected with alligator clips. So simple but let kids
       | experiment with making huge circuits together, debug unexpected
       | behavior (why did it turn off when the switch closed?), and learn
       | about conductors that could substitute for wire.
       | 
       | About the most complicated thing we've done is paper circuits
       | (with copper tape), lighting up LED skull eyes for a Dia de los
       | Muertos card. The debugging was hard, and a lot of kids would've
       | benefitted from doing the light bulb activity first with an eye
       | toward this.
       | 
       | My "worst" activity was digging soil samples (fun) and seeing how
       | the layers separated in water after days to settle in order to
       | classify the soil type (boring, pointless). Luckily I also
       | brought our vermicomposter, and everyone had a great time playing
       | with worms.
       | 
       | Another parent did an ambitious sewing project, which took 2-3
       | sessions to complete but was great to get kids to get exposed to
       | sewing machines, and they had a gift for a parent.
       | 
       | --
       | 
       | Yes, pick the topics that you're passionate about because your
       | visible enthusiasm is critical to engagement, but don't make it
       | about, say, 3D printing because you want to use your printer
       | (you'll just end up doing a lot of work for indifferent kids).
       | Keep it simple and learn from what the kids respond to.
        
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