Additional resources

• Games and Toys in the Teaching of Science and Technology, edited by Norman K. Lowe: http://www.unesco.org/ education/ pdf/ 325_41.pdf [Tip: hold Ctrl and click a link to open it in a new tab. (Hide tip)]
• ‘The art and science of teaching/Using games to enhance student achievement’ by Robert J. Marzano: http://www.ascd.org/ publications/ educational-leadership/ feb10/ vol67/ num05/ Using-Games-to-Enhance-Student-Achievement.aspx
• Physics tutorial on charging by friction: http://www.physicsclassroom.com/ class/ estatics/ Lesson-2/ Charging-by-Friction
• Static electricity: http://www.sciencemadesimple.com/ static.html