Matter and Energy A Textbook on Matter http://www.nyu.edu/pages/mathmol/textbook/4gradecover.html Energy http://www.nyu.edu/pages/mathmol/textbook/energy.html Matter http://www.chem4kids.com/files/matter_intro.html Kid-friendly tutorial on all aspects of matter. Watt's the Matter? http://www.energyquest.ca.gov/wattsthat_junior/power/index.html Energy online game 1 http://www.energyquest.ca.gov/wattsthat_junior/index.html Energy online game 2 Energy Quest http://www.energyquest.ca.gov/index.html States of Matter Project Integrate - teacher created web site ReviseWise Science - States of Matter http://www.bbc.co.uk/schools/revisewise/science/materials/08_act.shtml ReviseWise Science - Changing Matter http://www.bbc.co.uk/schools/revisewise/science/materials/09_act.shtml http://www.bbc.co.uk/schools/scienceclips/ages/9_10/changing_state.shtml An interactive clip to show how matter can change states.