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A pot of gold at the end of a rainbow

What's in a Rainbow?

STEM Explained

Rainbows are beautiful examples of optics in nature. We see them thanks to the reflection and refraction of visible light and water.

The water cycle

What is the Water Cycle?

Lessons

Students develop the skills of observing and recording observations as they explore how the water cycle works.

​​​​​​​The Electronic Sackbut Synthesizer

Who Created the Electronic Synthesizer?

STEM Explained

A Canadian researcher built the first voltage-controlled synthesizer in the 1940s.

What is immiscibility?

What is immiscibility?

Hands-on Activities

Creating mixture of liquids can be very useful, but why do some liquids not mix well? Learn what causes liquids to be immiscible.

Hammer and nails

Which Fastener is Best?

Lessons

Students will learn about the different types of fasteners to investigate which fastener is best for a particular material or job and why.

What is in blood?

What is in blood?

Hands-on Activities

Make a model of blood and learn about the function of each of the parts that makes up blood.

What is the best way to clean up an oil spill?

What is the best way to clean up an oil spill?

Hands-on Activities

Learn about the properties of materials and the challenges of cleaning up an oil spill in this activity.

What is the Greenhouse Effect?

What is the Greenhouse Effect?

Hands-on Activities

Explore the greenhouse effect and learn about the impacts it can have on the environment.

Circle of colours

What is white light?

Hands-on Activities

Find out what happens if you spin the colours of the rainbow in this hands-on activity.

The planet Mars

What is your weight on another planet?

Hands-on Activities

Do you weigh the same on Jupiter as you do on Earth? Learn to calculate your weight on a different planet.

Biofuel concept

What are the Pros and Cons of Ethanol Biofuel?

STEM Explained

Biofuels like ethanol might help fight climate change. But they can contribute to food insecurity and greenhouse gases in ways that might surprise you.

Screen captures from embedded Kurzgesagt – In a Nutshell videos

What are the Pros and Cons of Nuclear Energy?

STEM Explained

These two “point-counterpoint” videos provide arguments for and against using nuclear energy to generate electricity.

What are curds and whey?

What are curds and whey?

Hands-on Activities

It starts with curds and whey! Explore the basic chemistry behind making cheese in this hands on activity.

Charging a cell phone

What If You Could Charge Your Phone Using Radio Waves?

STEM Explained

Could we use radio waves to charge electrical technologies in the future?

Hamilton, Ontario industrial area with Toronto skyline in the background

What are Greenhouse Gases?

Backgrounders

This backgrounder explains what greenhouse gases are and how they contribute to climate change.