![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.
![What is the best way to clean up an oil spill?](/sites/default/files/2019-08/what-is-the-best-way-to-clean-up-an-oil-spill.jpg)
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?](/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.
![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.
![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 kinds of transportation are there?](/sites/default/files/2019-08/what-kinds-of-transportation-are-there.jpg)
What kinds of transportation are there?
Hands-on Activities
Go on a transportation scavenger hunt in this hands-on activity. How many different types of vehicles can you identify?
![What makes soil hard and compacted?](/sites/default/files/2019-08/what-makes-soil-hard-and-compacted.jpg)
What makes soil hard and compacted?
Hands-on Activities
Explore how walking on soil changes how water soaks into the ground and why that matters to gardeners and farmers.
![What speeds up a chemical reaction?](/sites/default/files/2019-08/what-speeds-up-a-chemical-reaction.jpg)
What speeds up a chemical reaction?
Hands-on Activities
Learn about the role of yeast in this fun decomposition reaction.
![Fluffy Snow On Deciduous Tree Fluffy snow on deciduous tree](/sites/default/files/styles/resource_card_image_360x300_/public/photo-1448561779273-0ab17ed52a14.jpg?itok=rv3HZf3W)
Weather: Snow
Picture Collections
10 images of some snowflake crystals and some winter scenes with snow
![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.
![Stratus Clouds Stratus Clouds](/sites/default/files/styles/resource_card_image_360x300_/public/photo-1440429801299-1edd4345fe51.jpg?itok=rJWRpe9j)
Weather: Stratus Clouds
Picture Collections
5 images of stratus clouds that cover a wide horizontal layer in the sky at low level and are often associated with rain or drizzle
![Battery of Stiger Vortex rainmaking guns at Charleville, Australia, in 1902](/sites/default/files/styles/resource_card_image_360x300_/public/2019-11/Stiger_rainmaking_guns.jpg?itok=4-aCsJPP)
What is Cloud Seeding?
STEM Explained
Cloud seeding is a type of weather modification. Learn about cloud seeding, as well as its risks and benefits.
![Solar panel project in Dakar, Senegal](/sites/default/files/styles/resource_card_image_360x300_/public/2019-11/Solar_project_Dakar%2CSenegal.jpg?itok=q64WAuqV)
What are Carbon Offsets?
STEM Explained
Can carbon offsets help you reduce your environmental footprint, practice sustainable living and fight climate change?