![a boy looks at a hamburger](/sites/default/files/styles/resource_card_image_360x300_/public/2019-10/boy_looking_at_hamburger.png?itok=Lc9CtrR6)
Do You Know What's On Your Plate?
STEM Explained
In 2013, many Europeans learned their beef lasagnas were actually made of horse meat. Learn about food fraud, and how a Canadian invention can help detect it.
![Sunken boat](/sites/default/files/styles/resource_card_image_360x300_/public/2019-10/Sunken_boat.jpg?itok=6LslrCNu)
Design & Build a Floating Device
Lessons
Students work collaboratively to design and build a floating device.
![Energy-saving light bulbs are a great way to save money at home](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/one-hanging-energy-saving-light-bulb.jpg?itok=IocGQakA)
Energy Efficiency at Home
STEM Explained
If you understand heat transfer, you can make lots of little changes at home to help the environment and your household’s bank account!
![Marble run prototype](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/Marble_run_prototype.jpg?itok=EwWmTwaO)
Design & Build a Marble Run
Lessons
Students will work collaboratively to design and build a marble run that meets specific criteria.
![Wind turbines with energy storage system](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/wind_turbines_with_energy_storage.jpg?itok=LY0Hfznj)
Can You Store Electricity for Later?
STEM Explained
Sometimes, power plants make too much electricity. Energy storage technologies can help! They store the extra electricity and release it when demand goes up.
![Rattle drum](/sites/default/files/styles/resource_card_image_360x300_/public/2019-11/Rattle_drum.jpg?itok=78KCsKh-)
Design & Build a Musical Instrument
Lessons
Students will learn about the properties of sound as they design, test and build a musical instrument.
![Artist’s conception of NASA’s Space Launch System](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/NASA%27s_space_launch_system.jpg?itok=8GvpYCDs)
Escape Velocity
STEM Explained
Why do a baseball and a rocket need the same launch speed to get from Earth into space? It has to do with physics and gravitational force.
![Shoe tread (aligraham, Pixabay)](/sites/default/files/styles/resource_card_image_360x300_/public/2019-11/Shoe_tread.jpg?itok=6Xi0pdSA)
Design & Build a Non-Slip Boot Tread
Lessons
Students work collaboratively to design and build a boot tread that will use friction to prevent slipping on an incline.
![Massive algal bloom](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/massive-algal-bloom.jpg?itok=pqgXB2yc)
Eutrophication: Why you should care about pond scum
STEM Explained
When fertilizers from agriculture get into lakes and rivers, big problems can result for aquatic ecosystems, food chains & webs!
![Catapult near Castle Saint-Angel, Italy](/sites/default/files/styles/resource_card_image_360x300_/public/2019-12/Catapult_Italy.jpg?itok=IRuk9s_f)
Design & Build a Ping Pong Ball Launcher
Lessons
Students work collaboratively to design and build a device that uses simple machines to launch ping-pong balls.
![Mother bird feeding a baby bird an insect](/sites/default/files/styles/resource_card_image_360x300_/public/2020-01/Mother_and_baby_bird.jpg?itok=-WajTCxr)
Exploring Food Chains
Lessons
Students develop and apply the skills of questioning, sorting & classifying and making connections as they explore food chains in different habitats.
![Measuring Slope Of Soil Measuring Slope Of Soil](/sites/default/files/styles/resource_card_image_360x300_/public/NRCSIA99345_-_Iowa_%283383%29%28NRCS_Photo_Gallery%29.jpg?itok=wI4lPIbO)
Careers: Soil Scientist
Picture Collections
5 images some work that a scientist who studies the Earth's soil might do such as classifying types of soil and measuring the slope of soil
![Hand holding oak tree seeds](/sites/default/files/styles/resource_card_image_360x300_/public/2019-11/Hand_holding_acorn.jpg?itok=zfAUmN9z)
Design & Build a Seed Saver
Lessons
Students will work collaboratively to design and build a structure that will protect a seed from the elements.
![woman with camera](/sites/default/files/styles/resource_card_image_360x300_/public/2019-10/woman_with_camera.jpg?itok=RPlx-udx)
Eye vs. Camera
STEM Explained
The human eye lets us see the world by sending impulses to our nervous system. In many ways, it is very similar to other optical devices, including cameras.
![Woman having a panic attack](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/woman-having-panic-disorder-in-city.jpg?itok=5lAyF1iB)
Chemical Equilibrium and Panic Attacks
STEM Explained
Panic attacks are scary and they upset your body’s chemical equilibrium. Learn what happens to acids & bases in your circulatory system during a panic attack.