![Ice technician on a zamboni at an outdoor skating rink](/sites/default/files/styles/resource_card_image_360x300_/public/2020-06/zamboni_outdoor_rink.jpg?itok=nSmM8N5Y)
The Hidden Heroes of Hockey!
STEM Explained
Ice Technicians use math and physics in order to keep the ice ready for hockey.
![Casting hot iron](/sites/default/files/styles/resource_card_image_360x300_/public/2020-04/casting_hot_iron.jpg?itok=mE6eP_bv)
What Causes Hot Things to Glow?
STEM Explained
Getting electrons excited by heat can cause certain materials to give off visible light when heated - like filaments in light bulbs.
![Solid, liquid and gas](/sites/default/files/styles/resource_card_image_360x300_/public/2020-01/solid_liquid_gas_header.png?itok=7jS9ACAN)
States of Matter
Backgrounders
Learn about the states of matter, as well more about one state in particular - gas!
![A variety of lava lamps](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/Assortment_of_lava_lamps.jpg?itok=IsXk69sI)
Lava Lamps
STEM Explained
Lava lamps are very interesting to look at. But they are also interesting examples of buoyancy, heat transfer and solubility!
![Hurricane Katrina as seen from space](/sites/default/files/styles/resource_card_image_360x300_/public/2019-11/Hurricane_Katrina_seen_from_space.jpg?itok=zKdK1Yo8)
Where Do Hurricanes Come From?
STEM Explained
Hurricanes are a kind of tropical cyclone. But where do they come from? And why do they cause so much damage? This article will answer all your storm-related questions!
![People playing ice hockey](/sites/default/files/styles/resource_card_image_360x300_/public/2020-06/people_playing_hockey.png?itok=pPcyU2JG)
Why Do Ice Rinks Stay Frozen?
STEM Explained
Every ice rink is an example of molecular bonding and gas laws at work!
![ChaoticMind75 - iStock](/sites/default/files/2019-08/why-is-it-colder-in-the-winter-even-though.jpg)
Why is it colder in the winter even though the Earth is closer to the Sun?
Hands-on Activities
Learn why we have seasons in this hands on activity.
![Why is rain not salty?](/sites/default/files/2019-08/why-is-rain-not-salty.jpg)
Why is rain not salty?
Hands-on Activities
Make a model of the water cycle and find out how water moves around on planet Earth.
![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.
![What is the Greenhouse Effect?](/sites/default/files/2019-08/what-is-the-greenhouse-effect.jpg)
What is the Greenhouse Effect?
Hands-on Activities
Explore the greenhouse effect and learn about the impacts it can have on the environment.
![The water cycle](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/illustration-of-the-water-cycle.jpg?itok=CQm-H0Cs)
What is the Water Cycle?
Lessons
Students develop the skills of observing and recording observations as they explore how the water cycle works.
![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 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.
![Digital Baking Thermometer Digital Baking Thermometer](/sites/default/files/styles/resource_card_image_360x300_/public/Digital_thermometer_in_vegan_bread_%285024088168%29.jpg?itok=aPKkzWen)
Tools: Thermometers
Picture Collections
6 images of some instruments such as clinical and baking thermometers that have been designed to measure temperature for specific purposes
![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.