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Ask HN: I need ideas to impress fifth graders with technology

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Re: Ask HN: I need ideas to impress fifth graders with technology

#41
post #13

Google Teachable Machine is fun for kids of that age. You can for example have the kids train Google to learn what pictures of dabbing are. https://teachablemachine.withgoogle.com/

Make sure you tell the kids how google (facebook and similar firms) make money by harvesting data (their data).

Teach them about persistent web tracking, clearing cookies, adblocking and the like and to use Firefox rather than chrome.

Re: Ask HN: I need ideas to impress fifth graders with technology

#42

I volunteer for Black Girls Code, specifically the 9-11 year old age group, and the last thing I did that really blew their minds was build an Obby in Roblox. Almost all of them have watched youtubers go through them. Get one working, modify it, have a kid or two modify it on their own. https://www.roblox.com/create

To save someone else a search:

obby means "obstacle course"

Re: Ask HN: I need ideas to impress fifth graders with technology

#43
Turing Tumble [0], where you trick pieces of plastic into doing arithmetic.

Kinda weird how a computer chip is 'just' a rock (molten sand) scared into calculating stuff for us by flashing it with bright lights and nasty chemicals. (OK, glossing over some minor details)

[0] https://www.turingtumble.com/

Re: Ask HN: I need ideas to impress fifth graders with technology

#44
One word, my man: ROBOTS.

Cloud platforms, microservices, and B2B messaging applications are boring to kids, but kids love robots. So showcase something that can move, interact, and be programmed. It can be built out of Lego, or something premade like a drone or Robosapien that's been hacked to be controlled by a Raspberry Pi using Python or whatever. Set it up so that you can "live-code" and take input from kids as to what to make the robot do.

But if you can, do something with a robot. Robots are more inherently, immediately exciting than just about any other computer application, even video games -- even to adults. I spent four years working at well below market rates at a robotics company just to have the opportunity to mess with and program cool hardware.

Re: Ask HN: I need ideas to impress fifth graders with technology

#45
post #38

I've done an interactive "do you know how many types of engineers there are?" for this age group that's worked really well. Timeframe: 5-15 minutes "Can anyone name a type of engineer?" and for each shoutout, talk a little about what each does. The guessing keeps everyone's attention. Types: software/computer, electrical, mechanical, chemical, environmental, civil, nuclear, aeronautical, etc. Bonus: bring 2-3 props (…

Oh gosh I just realized I don't have the self control to teach children. Context: I'm a software engineer.

All my explanations would be the "realistic" but kinda sarcastic answers.

Computer Engineer - Copy's pastes code until it works.

Rocket Scientists - Spend 50% of the time designing rockets, and 50% of their time hoping the rocket doesn't explode.

Locomotive Engineer - Whoops this isn't a real engineer! /s /s

Re: Ask HN: I need ideas to impress fifth graders with technology

#46
Make water bottle rockets. You shouldn't need more than a coke bottle, wine bottle cork, bicycle inner tube calve and matching pump. Optimal water level in bottle is ca. 1/3 IIRC, but figuring that out could be an interesting exercise.

Or show them some SpaceX stuff with landings or how MSL/Curiosity landed on Mars, that kind of stuff.

Re: Ask HN: I need ideas to impress fifth graders with technology

#47
I had to make a little power interceptor board with a current limiting IC to meet hazardous environment requirements for a product. During testing (shorting power through the chip) I decided to stick my finger on there and discovered a pretty cool phenomena. The thermal spike was so fast that it caused you to jerk your finger off every single time, but by the time your finger started to move, the heat was already dissipated to the point where it was completely safe to touch. Everyone in the office had to try it multiple times. No one was able to keep from jerking their finger away even though it was obvious that by the time your finger began moving involuntarily the heat was already gone. It perfectly demonstrated the perception/signal delay alongside reflexive behavior in the human body. Similarly you could use a simple transformer with a battery and use the collapsing EM field to shock them.

Re: Ask HN: I need ideas to impress fifth graders with technology

#48
I'm currently running a robotics course for ages 8-18. Drop me an email and I'll send you my lesson plans.

For everyone else(and you), what I just finished writing up is a course designed around taking technology back to basics.

Literally the first lesson is LED's , wires and batteries using cardboard as a breadboard.

My difficulties are slightly different than yours, as I need to keep English as a major goal of this, and I only have 12 weeks for each rotation of the course.

But if you want, I'll drop you my course notes, and respond here to any questions if this interests you (Note it's quite late here in Japan, so there will be a bit of a delay in responses).

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