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Build a ‘Steady-hand Game’ for under $3

Here’s the device I constructed from mostly scrap material. It’s been called the ‘steady-hand game.’ The goal in this challenge is for the player to not to complete the circuit!

If any part of the metal wand touches the wire, it completes the circuit, which is connected to a rudimentary ‘fan’. Took me about 45 minutes to assemble the contraption.

I admit, the challenge was a tad too difficult. I could have made it easier, but it tends to be more fun if it triggers the fan. Perhaps for a younger group I could have straightened the wire, or bent back the metal ‘wings’.

Material: wood, scrap wire, duct tape, old plastic container, 9-volt battery, copper wire.

  • The Wand: Metal egg beater from the Dollar Store. Bend back some of the loops to create wing-like protrusions.
  • Fan: Made from an old CD, with a piece of Duct tape to cover the center hole. Pierce the tape with the top of the motor. Connect the positive and negative terminals of the motor to the battery
  • The motor. Available at any hobby store, Radio Shack, or online
  • Battery: Ideally a 9-volt battery. D-size battery will also work fine.

Expand the idea! While this is a great way to incorporate it into a unit about electricity and circuits, you could get some students to design an elaborate set up: More complex coils of wire, different size wands, and different circuits that set off off a bell, a light bulb, a buzzer, and a fan, depending on which circuit the wand touches.

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Posted by on April 30, 2017 in Ed-Tech, Education, STEM, Technology

 

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Technology in schools. Love it or hate it?

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Touch screens and Robotics. My classroom this yea

In my upcoming July technology column I analyze the pros and the cons of Technology in Education. A few in my network have asked me about my thoughts on this ever-changing topic. (In Oct 2014 I did cover it – “Disrupting Education)

Here’s a summary of what’s to come. As you and I witness the discomforting transition from text books to tablets, from hand-outs to videos-as-homework, from sequential ‘lectures’ to disruptive (noisy) small group activity, it’s easy to fold our hands across our chests and fight it. But there are some compelling arguments on both sides. The Wall Street Journal, and the International Association of Technology in Education almost in the same week ran Pro and Con arguments about Ed-Tech. I get both sides! In my classes I argue against the inane use of social media for the sake of ‘publicity’, but I encourage thought use of digital media with real, and real-time audience participation.

‘Hall and Stevens’ Vs Khan Academy. In my younger days, I had to thumb through Hall and Stevens, the geometry ‘bible.’ Today’s kids are learning geometry from a guy called Salman Khan, founder the free online learning portal for mathematics and science. (Fun sidebar: ‘Hall and Stevens’ is available as an eBook; flip the pages as if it was a real book, here: https://archive.org/details/schoolgeometry00hall

Screen Time vs Think Time. I am a big proponent of virtual and augmented reality, especially if it could bring in ‘distant’ experiences (Civil War, 3D models of engineering, space science etc), but I also aggressively advocate limited screen time. Odd isn’t it? That’s the dilemma we educators and parents face. Augmented Reality

Your son or daughter probably goes to school with a device in her backpack with more processing power than the rocket that took men to the moon, and this child wants to be… an astronaut? You’ve forgotten how to log into your son’s school website to download his missed homework, but… he’s found a way to ‘jailbreak’ your cell phone? There are ‘teaching moments’ in all of these.

Sal Khan speaks of the “fundamentally dehumanizing experience” in education. And he was not talking about teenagers and even pre-teens staring at their phones and not talking to one another. A real, ‘digital citizenship’ crisis, right now! He was referring to children packed in a classroom! Hmm!

Love it or hate it, technology is gate crashing our class rooms, just like ball-point pens or calculators once did. Are you ready for it?

 

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