![The planet Mars](/sites/default/files/2019-10/Mars.png)
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.
![What uses electricity?](/sites/default/files/2019-08/what-uses-electricity.jpg)
What uses electricity?
Hands-on Activities
Take a tour of different rooms in your home. Which items in each room use electricity? How do you know they use electricity?
![A pot of gold at the end of a rainbow](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/A%20pot%20of%20gold%20at%20the%20end%20of%20a%20rainbow.jpeg?itok=qHjgEPrQ)
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.
![Which materials bounce?](/sites/default/files/2019-08/which-materials-bounce.jpg)
Which materials bounce?
Hands-on Activities
Balls go up and down. But what makes for a good ball? Find out by exploring which materials bounce.
![The Electronic Sackbut Synthesizer](/sites/default/files/styles/resource_card_image_360x300_/public/2020-01/Electronic_Sackbut_Synthesizer.jpg?itok=jubC6sRr)
Who Created the Electronic Synthesizer?
STEM Explained
A Canadian researcher built the first voltage-controlled synthesizer in the 1940s.
![A melting world-shaped glacier](/sites/default/files/styles/resource_card_image_360x300_/public/2019-11/melting_world-shaped_glacier.jpg?itok=-lrMUAJG)
What is Ocean Warming and Why Does It Matter?
STEM Explained
Oceans absorb the greatest amount of solar radiation on Earth. Ocean warming can lead to glaciers melting and ocean acidification.
![Sound waves](/sites/default/files/styles/resource_card_image_360x300_/public/2020-01/Sound_wave_icons.jpg?itok=GMAHUQyT)
What is Sound and How do we Hear it?
Backgrounders
Learn how sound travels in waves and how it is measured in this backgrounder.
![Artist’s interpretation of astronaut in space](/sites/default/files/styles/resource_card_image_360x300_/public/2019-12/Astronaut_in_space.jpg?itok=650F3G6e)
What are the Different Types of Radiation?
Backgrounders
Learn about the different types of radiation, how they interact with atoms and how they can affect you.
![Screen captures from embedded Kurzgesagt – In a Nutshell videos](/sites/default/files/styles/resource_card_image_360x300_/public/2020-02/pros_cons_nuclear_energy.png?itok=NVvZ7d08)
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 causes ocean currents?](/sites/default/files/2019-08/what-causes-ocean-currents.jpg)
What causes ocean currents?
Hands-on Activities
Create a model of ocean currents and learn how currents are formed.
![What do magnets do?](/sites/default/files/2019-08/what-do-magnets-do.jpg)
What do magnets do?
Hands-on Activities
Have fun discovering what magnets can pick up in this hands on activity.
![Charging a cell phone](/sites/default/files/styles/resource_card_image_360x300_/public/2020-02/charging_a_cell_phone.jpg?itok=ugTEHYXD)
What If You Could Charge Your Phone Using Radio Waves?
STEM Explained
Could we use radio waves to charge electrical technologies in the future?
![What is an exothermic reaction?](/sites/default/files/2019-08/what-is-an-exothermic-reaction.jpg)
What is an exothermic reaction?
Hands-on Activities
Things are heating up! Explore the temperature change that occurs in an exothermic reaction and the role of catalysts is this chemistry activity.
![Thermal images of people and objects](/sites/default/files/styles/resource_card_image_360x300_/public/2019-10/Thermal_images_of_people_and_objects.png?itok=5vLkf21V)
Thermopower and the Body Heat-Powered Flashlight
STEM Explained
Can your body be a source of electricity generation? Maybe, if you understand heat transfer. Explore this concept through a 2013 invention by a Canadian teen.
![City at night with transmission lines](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/City_at_night_with_transmission_lines.jpg?itok=UiKbdb4e)
Understanding Electricity Supply and Demand
Backgrounders
Electricity demand changes constantly. Suppliers need to generate more electrical energy when demand is high, and less when demand is low.