![Lacks historical marker in Clover, Virginia](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/Henrietta_Lacks_historical_marker.jpg?itok=pUlVzPub)
Why is Henrietta Lacks Important?
STEM Explained
When the cells of Henrietta Lacks were collected by medical researchers after her death in 1951, it changed the future of medicine.
![Weighing the hops](/sites/default/files/styles/resource_card_image_360x300_/public/2019-10/Weighing_the_hops.jpg?itok=SF7NOfGY)
Hop To It! The Science Behind Beer
STEM Explained
Brewing beer involves a series of complex biochemical reactions.
![Narwhals, polar bears and other common Arctic animals swim in the Arctic waters. Image © id-work, iStock](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/5755.jpg?itok=CVjIdhgO)
How are Arctic Animals in Canada Affected by Climate Change?
STEM Explained
Arctic animals have evolved to thrive in harsh arctic ecosystems, but the environmental footprint created by climate change is affecting their survival.
![bees on frame held by beekeeper](/sites/default/files/styles/resource_card_image_360x300_/public/2019-11/Bees_at_work.jpg?itok=eCBFpn4d)
How are the World's Bee Populations Doing?
STEM Explained
Bees are important for agriculture. But bee populations face threats. This resource looks at Colony Collapse Disorder, herbicides & pesticides, and more.
![Salmon aquaculture pens](/sites/default/files/styles/resource_card_image_360x300_/public/2020-05/Salmon_aquaculture_pens.jpg?itok=yrwdnv2j)
Farmed Salmon vs. Wild Salmon
STEM Explained
Aquaculture is seen as a sustainable way to produce fish. But are farmed salmon better than wild fish?
![How big were dinosaurs?](/sites/default/files/2019-08/how-big-were-dinosaurs.jpg)
How big were dinosaurs?
Hands-on Activities
Some dinosaurs were very big! Compare the sizes of different dinosaurs to the sizes of familiar objects you see in your community.
![Swivel hook fastener](/sites/default/files/styles/resource_card_image_360x300_/public/2019-12/Swivel_hook_fastener.jpg?itok=34zccOHQ)
Exploring Objects, Materials and Fasteners
Lessons
Students identify and sort objects, including fasteners, according to material and purpose.
![How can a person walk through a sheet of paper?](/sites/default/files/2019-08/how-can-a-person-walk-through-a-sheet-of-paper.jpg)
How can a person walk through a sheet of paper?
Hands-on Activities
In this challenge activity discover how one piece of paper can go a long way. It's time to think outside the box!
![Goldfish Goldfish](/sites/default/files/styles/resource_card_image_360x300_/public/Gullfiskur.jpg?itok=L6czSzoc)
Fish: Freshwater
Picture Collections
4 images of some fish such as koi that live in freshwater river and lake environments and in freshwater aquariums and garden ponds
![Canaries were once used to signal dangers to miners. - Image © Vito Cangiulli, iStockPhoto.com](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/Canaries%20were%20once%20used%20to%20signal%20dangers%20to%20miners.jpg?itok=mc-wHhjT)
How Can Birds Help Monitor the Health of Ecosystems?
STEM Explained
Scientists can observe birds to get useful information about the health of, and changes in, an ecosystem.
![Clown Fish Clown Fish](/sites/default/files/styles/resource_card_image_360x300_/public/Clown_fish_in_the_Andaman_Coral_Reef.jpg?itok=nkTzBh1T)
Fish: Saltwater
Picture Collections
14 images of some fish such as lion fish, grouper and sharks that live in saltwater environments like oceans, saltwater lakes and aquariums
![How can I build a rollercoaster?](/sites/default/files/2019-08/how-can-i-build-a-roller-coaster.jpg)
How can I build a rollercoaster?
Hands-on Activities
Try your hand at building a “super coaster” using materials around your home.
![Water Lily Water Lily](/sites/default/files/styles/resource_card_image_360x300_/public/waterlily.jpg?itok=nnvmuAjZ)
Flowers: Cup Shape
Picture Collections
8 images of some flowerheads such as roses and water lilies whose outer petals are longer than the petals in the centre of the flower
![How can I engineer a raft so that it holds the most weight?](/sites/default/files/2019-08/how-can-i-engineer-a-raft.jpg)
How can I engineer a raft so that it holds the most weight?
Hands-on Activities
Explore the forces of gravity and buoyancy while designing a raft to hold the most weight possible.
![Lac-Mégantic fire on the day of the train derailment](/sites/default/files/styles/resource_card_image_360x300_/public/2019-10/Lac_megantic_burning.jpg?itok=bfjuGRz5)
CSI Lac-Mégantic: How are victims identified after a disaster?
STEM Explained
Learn about forensic pathology and other methods scientists use, like analysing the skeletal system, to identify the dead after a disaster.