Cartesian Diver to teach about buoyancy and density. I like making them out of a cut pipette and a nut because you can see the water level get higher when it is pressurized (thus making it more dense and making it sink.) Some of the other closed system divers are harder to observe getting more dense under pressure because they are just being squished and that is hard to see.
Build a paper rocket and send it flying with a single puff of air. Discover how various fins can change how your rocket will fly... Rocket is made by wrapping paper around a pencil, taping it, removing the pencil, and adding paper fins. The launcher is a straw that you blow through.
Why is the sky blue, and the sunset red? Find out at Howtosmile.org in the Exploratorium Glue Stick Sunset activity. Model the atmosphere's scattering of light using a flashlight and clear glue sticks.
In the "Building a Simple Motor Puts a New Spin on Magnets" electricity and electronics #science project, students build a simple Beakman motor and investigate how design changes affect the rate and direction of rotation. A project kit of specialty items is available to do this science project! [Source: Science Buddies, http://www.sciencebuddies.org/science-fair-projects/project_ideas/Elec_p051.shtml?from=Pinterest] #STEM #scienceproject