HTML5 collection from Primary Contest

Selected items from previous primary math contests. For a student version, click> http://www.geogebratube.org/student/c7281/m65822/ylyy . Check these videos for copying and modifying files in GeoGebraTube:

• http://youtu.be/f7HfIKWtvWk
• http://youtu.be/1-aw0Vhc1pk