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Are you a Square or a Rectangle?
Source Institutions
In this activity, learners investigate whether more people are squares or rectangles. People with similarly sized heights and arm spans are classified as squares.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-678.png?itok=KUwm04GA)
Masses & Springs
Source Institutions
In this online activity, learners use a realistic mass and spring laboratory. They hang masses from springs and adjust the spring stiffness and damping.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-155.png?itok=QyrTOqS_)
Cool It!
Source Institutions
In this fun hands-on activity, learners use simple materials to investigate evaporation. How can the evaporation of water on a hot day be used to cool an object? Find out the experimental way!
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-063.jpg?itok=RXjH4pDF)
Size it Up
Source Institutions
Learners investigate why the Sun and Moon appear the same size in the sky even though the Sun is over 400 times larger in diameter.