![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.
![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.
![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.
![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.
![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?
![The Parkes Observatory in New South Wales, Australia](/sites/default/files/styles/resource_card_image_360x300_/public/2019-10/Park_Observatory_NSW_Australia.jpg?itok=K11hu9qK)
The Search for Extraterrestrial Intelligence - and How You Can Help!
STEM Explained
When astronomers search for extraterrestrial life, they often have to listen for radio waves coming from deep space. If you’re interested, you can help!
![A set of lipstick in various colours](/sites/default/files/styles/resource_card_image_360x300_/public/2020-02/Assortment_of_lipsticks.png?itok=z_U-KbdM)
The Chemistry of Lipstick
STEM Explained
Learn about the organic compounds that make up lipstick as well as about some of the chemistry that goes into this popular cosmetic.
![The newest chemical elements](/sites/default/files/styles/resource_card_image_360x300_/public/2019-10/new-chemical-elements-nihonium-moscovium-tennessine-and-oganesson.jpg?itok=DnC4xsXM)
The Newest Elements on the Periodic Table
STEM Explained
The periodic table was last updated in 2016 with four new chemical elements. What is a chemical element? What is the atomic structure of the newest chemical elements? How did they get their names?
![Sound waves and sound-producing devices. Image © jop_pop, istockphoto.com](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/Sound%20waves%20and%20sound-producing%20devices.jpg?itok=6ATkmIUM)
Sound vs. Noise
STEM Explained
What is the difference between sound and noise? How do they affect your hearing? And is noise always a bad thing?
![Replica of the earliest wooden model stethoscope](/sites/default/files/styles/resource_card_image_360x300_/public/2020-02/stethoscope_replica_ingenium.jpg?itok=RgHTg8L2)
Stethoscope Replica
Interactives
Using stethoscopes, doctors can use sound waves to detect various health issues. Learn how this device has evolved since it was invented in 1816!
![Water: A Natural Reflector Water: A Natural Reflector](/sites/default/files/styles/resource_card_image_360x300_/public/PM_Water_Reflector.jpg?itok=0C01YEYB)
Reflectors
Picture Collections
7 images of some objects that can reflect light such as mirrors, Mylar balloons and water
![Is a green apple always green?](/sites/default/files/2019-08/is-a-green-apple-always-green.jpg)
Is a green apple always green?
Hands-on Activities
What does light have to do with colour? Observe some colourful fruit under different conditions to learn why we see the colours we see!
![Is it a liquid or a solid?](/sites/default/files/2019-08/is-it-a-liquid-or-a-solid.jpg)
Is it a liquid or a solid?
Hands-on Activities
Make some goop that has the properties of a liquid and a solid.
![is-it-possible-to-change-water-into-cola](/sites/default/files/2019-08/is-it-possible-to-change-water-into-cola.jpg)
Is it possible to change water into cola?
Hands-on Activities
Explore the concept of displacement of fluids in this hands on activity.