![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.
![A man powers a drone with a remote control. Image © Bestgreenscreen, iStockphoto.com](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/A%20man%20powers%20a%20drone%20with%20a%20remote%20control.jpg?itok=zRupYrjb)
It's a Bird, It's a Plane, It's... a Drone!
STEM Explained
Drones are very cool and very useful aircraft! This resource explains how drones stay in flight, and outlines some of their uses.
![Student making structure with pasta and marshmallows](/sites/default/files/styles/resource_card_image_360x300_/public/2019-11/student_building_with_marshmallows_pasta.jpg?itok=m6nnbsOn)
It's All in the Shape
Lessons
Students look for shapes in structures and then build and test different frame structures for strength and stability.
![General Motors Place](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/General_Motors_Arena_Vancouver_BC.jpg?itok=NGrlYeqn)
Keeping the Rink on Ice
STEM Explained
Learn about the chemistry of ice skating rinks, and the technology & engineering that lets us enjoy them indoors as well as outside.
![Lighting inside the Destiny Laboratory Module](/sites/default/files/styles/resource_card_image_360x300_/public/2019-12/Lighting_Destiny_Module_Sleep.jpg?itok=0SQn_Sm7)
Light on Earth and on the International Space Station
Backgrounders
This backgrounder explains what light is, how it is measured, and how it affects people on Earth and astronauts on board the International Space Station.
![Assortment of souvenir magnets on the fridge](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/souvenir-magnets-on-the-fridge.jpg?itok=pMIVtKoG)
Magnificent Magnets
Lessons
Students develop and apply the skills of sorting & classifying, comparing & contrasting and predicting as they explore magnetism as a non-contact force that causes movement.
![How many drops of water can you rest on one coin?](/sites/default/files/2019-08/how-many-drops-of-water-can-you-fit-on-a-coin.jpg)
How many drops of water can you rest on one coin?
Hands-on Activities
Explore surface tension in this hands on challenge activity.
![How much power is generated when climbing a set of stairs?](/sites/default/files/2019-08/how-much-power-is-generated-when-climbing-a-set-of-stairs.jpg)
How much power is generated when climbing a set of stairs?
Hands-on Activities
Put on your running shoes and sharpen your pencil! Investigate the mathematical connection between work and power in this hands-on activity.
![Water slides](/sites/default/files/styles/resource_card_image_360x300_/public/2020-01/Water_slide.jpg?itok=y1yPxO54)
How Surfaces Affect Motion
Lessons
Will it slide or stick? Students conduct a fair test to investigate how different solid surfaces affect the movement of an object on a ramp.
![How tall can you build a marshmallow structure that will support weight?](/sites/default/files/2019-08/how-tall-can-you-build-a-marshmallow-structure.jpg)
How tall can you build a marshmallow structure that will support weight?
Hands-on Activities
Are you willing to give up a sweet treat for the sake of science? Can you engineer a strong and stable structure out of something soft and fluffy?
![Construction vehicles use hydraulics. Image © Djahan, iStockPhoto.com](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/Construction%20vehicles%20use%20hydraulics.jpg?itok=9wlkKEIz)
Hydraulics 101
STEM Explained
Hydraulics power many of the large machines you see around you.
![How does sound travel?](/sites/default/files/2019-08/how-does-sound-travel.jpg)
How does sound travel?
Hands-on Activities
Try out this cool activity to hear sound vibrations.
![Drop tower ride](/sites/default/files/styles/resource_card_image_360x300_/public/2019-10/Drop_tower_ride.jpg?itok=39sxzXhn)
How is Lenz's Law Used in Drop Tower Rides?
STEM Explained
How do magnetic fields help you get down safely from the top of a drop tower ride? Learn how electromagnetic induction works at the amusement park.
![Carillon Hydroelectric Power Station, Saint-André-d'Argenteuil, Quebec](/sites/default/files/styles/resource_card_image_360x300_/public/2019-11/Carillon_Hydroelectric_Power_Station.jpg?itok=wwBKKBX5)
Generating Electricity: Hydroelectric Power
STEM Explained
Learn how moving water can be used to generate electricity. This is called hydroelectric power generation.