http://www.kidsmathgamesonline.com/logic/rockpaperscissors.html
http://nces.ed.gov/nceskids/chances/index.asp
http://www.harcourtschool.com/activity/probability_circus/
http://pbskids.org/cyberchase/games/probability/index.html
http://www.betweenwaters.com/probab/flip/coinmainD.html
http://www.subtangent.com/maths/higher-lower.php
http://www.harcourtschool.com/activity/elab2004/gr4/28.html
http://shodor.org/interactivate/activities/BasicSpinner/
http://nces.ed.gov/nceskids/chances/index.asp
http://www.harcourtschool.com/activity/probability_circus/
http://pbskids.org/cyberchase/games/probability/index.html
http://www.betweenwaters.com/probab/flip/coinmainD.html
http://www.subtangent.com/maths/higher-lower.php
http://www.harcourtschool.com/activity/elab2004/gr4/28.html
http://shodor.org/interactivate/activities/BasicSpinner/
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