Student Projects

Title Summary Post datesort icon

TriColour LED Flashlight

Keywords: activity, battery, breadboard, circuit, colour addition, LED, resistors, switch, tricolour LED

Make your own TriColour LED Flashlight!

This is a straightforward classroom or summer camp activity to teach students simple circuitry and the addition of colours. The students can go home with a useful and energy-efficient flashlight.

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6 years 4 weeks ago

Energy cost of flying

Keywords: energy, energy loss, flight, potential energy

Gliders and planes glide similarly. How similar?

The power required to keep a toy plane flying can be inferred from the way it glides. This technique also works for full-sized aircraft.

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5 years 47 weeks ago

Bicycle Power

Keywords: bicycle, chi-squared, power, spreadsheets

How can you measure the mechanical power required to pedal a bicycle by observing how it slows down when you stop pedalling?

The forces acting on a bicycle can be estimated by observing the rate at which it slows down when you stop pedalling. This technique can, in principle, be used for any transportation vehicle.

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5 years 35 weeks ago

Nuclear Fission Project

Keywords: chemical, nuclear, reaction rates

Yes, you can do this at home.

Students can model a self-sustaining reaction using ping pong balls and mouse traps while varying the density/concentration of the reactants to see how that affects the rate of reaction.

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5 years 24 weeks ago

Laminar (Un)mixing

Keywords: activity, fluids, laminar flow, mixing, reynolds number

"Unmixing" a mixture is impossible, right? So what's going on here?

Find out how to construct your own "(un)mixing" demonstration and learn about how it works here.

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4 years 39 weeks ago

Stretching Rubber Bands

Keywords: Elasticity, Hooke's Law, Rubber bands, Young's Modulus

Why is this energy bar hanging from a rubber band?

In this project you will explore the elastic properties of rubber bands.

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4 years 28 weeks ago

C21 Video Contest Top Videos

4 years 28 weeks ago

Light Theremin (Simple)

Keywords: Hands-Free, Light Theremin, Lights Sensing Instrument

Is it possible to create a musical instrument that can be played without direct contact?

This project takes the student through the steps to build a simple Light Theremin, an instrument which changes its pitch depending on how much light is shone upon it.

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4 years 3 weeks ago

Light Theremin (Advanced)

Keywords: Generate Sine Wave, Light Sensing Instrument, Light Theremin

Is it possible to create a musical instrument that can be played without direct contact?

A more complicated version of the simple Light Theremin. This version uses another light sensor for volume control, and sounds much closer to the original Capacitive Theremin.

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4 years 3 weeks ago

Light Bulb Efficiency and Hand Crank Energy Generation

Keywords: breadboard, circuit, efficiency, electricity generation, energy, energy conversion, Lend an Experiment (LEx), lighting

What does it really take to power a light bulb?

This activity is part of the LEx (Lend an Experiment) Climate Kit. Students compare the power consumption of incandescent and LED bulbs through the use of hand crank generators and a simple circuit. Concepts include the conversion of mechanical to electrical energy, power and efficiency, and measurement estimation. There is an option to also investigate the efficiency of the hand crank generator.

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1 year 52 weeks ago
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