Posted: June 14, 2016
http://www.bbc.co.uk/schools/scienceclips/ages/8_9/friction.shtml
http://discoverykids.com/games/build-a-coaster/
http://www.bbc.co.uk/schools/scienceclips/ages/10_11/forces_action.shtml
http://phet.colorado.edu/sims/friction/friction_en.html
http://www.scienceunleashed.ie/Games/scooter.swf
http://pbskids.org/dragonflytv/show/icebike.html
http://www-g.eng.cam.ac.uk/mmg/teaching/peterstidwill/interact/resources/parkworldplot/parkworldplotlink.htm (use "click here to launch game" link
http://resources.hwb.wales.gov.uk/VTC/identify_forces/eng/Introduction/act1.swf