![Clouds seen from an airplane](/sites/default/files/styles/resource_card_image_360x300_/public/2020-04/Clouds_seen_from_airplane.jpg?itok=tBkpJ-LY)
Weather: Clouds
Backgrounders
Learn how clouds form and how they can be grouped into different categories
![Amy King dans un studio d'enregistrement](/sites/default/files/styles/career_image/public/2020-04/Amy%20King.jpg?itok=gT1IjzDr)
Amy King
Music Producer / Recording Engineer
![Abstract light pattern](/sites/default/files/styles/resource_card_image_360x300_/public/2020-02/abstract_light.jpg?itok=MKGdyhIT)
Light and Its Properties
Backgrounders
Learn about light and its properties.
![Winter Hat Winter Hat](/sites/default/files/styles/resource_card_image_360x300_/public/photo-1419179755747-14e631575162.jpg?itok=bzAEJAO0)
Seasonal Clothing: Winter
Picture Collections
11 images of some clothing that may typically be worn in the winter such as gloves, toques, scarves and snow boots
![Downhill Skiing Downhill Skiing](/sites/default/files/styles/resource_card_image_360x300_/public/Powder_skiing_in_Chamonix_Mont_Blanc.jpg?itok=BobbdizO)
Seasonal Activities: Winter
Picture Collections
13 images of some activities that may happen in the winter such as snowboarding, skating and playing hockey on ice
![Tree through the four seasons](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/Tree_through_the_four_seasons.jpg?itok=d1-felZQ)
Why do we have seasons?
Backgrounders
Learn why seasons change. Discover how they’re different in the Northern and Southern hemispheres.
![Adult and children looking through telescope](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/adult_and_children_looking_through_telescope.jpg?itok=eKeL_YGd)
The Optics of Telescopes
Backgrounders
Learn about telescopes, how they work & why they're important to astronomers.
![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!
![Two faces each with one eye visible](/sites/default/files/2022-06/two%20eyes%20to%20see.jpg)
Why do we need two eyes to see?
Hands-on Activities
Ever wondered why we have two eyes (and not one, three or more)? Find how your two eyes work together in this hands-on activity.
![Why is everything so small down there?](/sites/default/files/2019-08/why-is-everything-so-small-down-there.jpg)
Why is everything so small down there?
Hands-on Activities
Explore how we see things far and near and from different angles. It's all about perspective!
![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.
![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.
![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.
![Circle of colours](/sites/default/files/2019-08/what-is-white-light.jpg)
What is white light?
Hands-on Activities
Find out what happens if you spin the colours of the rainbow in this hands-on activity.