Here's a few games to practice using place value models to review tens and ones. With all the snow days we've had the children need some review lessons.
http://nlvm.usu.edu/en/nav/frames_asid_152_g_1_t_1.html?from=topic_t_1.html
http://www.ictgames.com/dinoplacevalue.html
http://www.ictgames.com/sharknumbers.html
