Great Visuals!!!

Everyone knows that visuals help students understand concepts to a greater degree.  Sometimes it is hard to grasp a concept unless you can actually see it work.  I have discovered two amazing sites that provide free visuals.  Hippocampus.org is a free, core academic web site that delivers rich multimedia content--videos, animations, and simulations--on general education subjects to middle-school and high-school teachers and college professors, and their students, free of charge. Teachers project HippoCampus content during classroom learning and assign it for computer labs and homework. Students use the site in the evenings for study and exam prep. Users do not need to register or log in to use the site.

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Freezeray.com offers a growing bank of imaginative, highly visual teaching-aids developed for use with interactive whiteboards for middle, high, and college classes.  Although both of these sites are geared for older students some of the simulations and visualizations could be useful for older elementary and perhaps even older primary students.