![Pulley With Chains Pulley with Chains](/sites/default/files/styles/resource_card_image_360x300_/public/ARA2011-01-03_13-46-56.jpg?itok=bSBBEgxq)
Simple Machines: Pulleys
Picture Collections
6 images of some objects such as in fitness equipment which use wheels with grooves in their rims called pulleys for movement
![Soapy hands](/sites/default/files/styles/resource_card_image_360x300_/public/2019-10/soapy_hands.jpg?itok=22VihjnH)
Stupendous Suds
STEM Explained
Every time you wash your hands with soap, there are complex chemical reactions taking place.
![Wood Screw Wood Screw](/sites/default/files/styles/resource_card_image_360x300_/public/Screw_3.jpg?itok=AnqMZDRD)
Simple Machines: Screws
Picture Collections
5 images of some objects such as corkscrews that have a mechanism of an inclined plane wrapped around a cylinder to create movement
![Sunrise Sunrise](/sites/default/files/styles/resource_card_image_360x300_/public/Perth_sunrise.jpg?itok=zGCNcEx1)
Sun: Sunrise
Picture Collections
5 images of scenes showing various sunrises
![Chisels Chisels](/sites/default/files/styles/resource_card_image_360x300_/public/Klopfholz_mit_Beiteln.jpg?itok=I8HFNy5J)
Simple Machines: Wedges
Picture Collections
6 images of some tools such as axes and spikes that are inclined planes and used to help push objects apart
![Ferris Wheel: The London Eye Ferris Wheel: The London Eye](/sites/default/files/styles/resource_card_image_360x300_/public/London_Eye_-_head_on_view.jpg?itok=LdM6yYsS)
Simple Machines: Wheels And Axles
Picture Collections
6 images of some objects such as ferris wheels and skate boards with wheel and axle mechanisms that create rotary movement
![Wingsuit flying over Massachusetts](/sites/default/files/styles/resource_card_image_360x300_/public/2019-07/Wingsuit%20flying%20over%20Massachusetts.png?itok=ZYFcFP2I)
Soaring for Sport
STEM Explained
Ever dreamed if overcoming gravity and flying away? Using aerodynamics, wingsuit jumpers get as close to flight as humanly possible.
![Sorting Mats](/sites/default/files/styles/resource_card_image_360x300_/public/2019-11/Sorting_mats.jpg?itok=1k4uvIz7)
Sorting Mats
Teaching STEM
This strategy helps students develop critical thinking skills as they sort, organize and classify things in different ways.
![Graphic of a tuning fork with sound waves coming out of both sides.](/sites/default/files/styles/resource_card_image_360x300_/public/2022-11/tuning-fork.jpg?itok=156nSpC9)
Exploring Sound
Lessons
Students will learn about and explore the properties of sound through activity centres.
![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?
![Space junk](/sites/default/files/styles/resource_card_image_360x300_/public/2019-10/space-junk-orbiting-earth.jpg?itok=nA6-Kgmi)
Space Junk
STEM Explained
Litter isn't just a problem on Earth. When litter ends up in space, it can cause collisions and other consequences for satellites, the International Space Station and even for people on Earth!
![Former Canadian astronaut Robert Thirsk enjoys cycling on board the ISS](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/Robert_Thirsk_cycling_on_ISS.jpg?itok=YDleE__K)
Spaceflight and Bone Loss
STEM Explained
Astronauts can experience bone loss in space. To understand why, you need to know a bit about how bones are formed and maintained in your body.
![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!
![A column supporting the roof the Parthenon in Greece](/sites/default/files/styles/resource_card_image_360x300_/public/2019-10/Column_Parthenon.jpg?itok=WiYZb4Kk)
Strong Shapes: Cylinders
Lessons
Students develop and apply comparing & contrasting, observing and predicting skills as they explore the strength of cylinders made with different materials.