This simple preschool activity is a fun way to help your preschooler practice measuring and see how HUGE some of the dinosaurs were by making your own T-Rex footprint and comparing it to your family members' feet.
Elementary math videos and songs. Try the 9 X 9 song to get a hint of how good these are. His whole site is great for every classroom. Teachers MUST use more music and teaching videos to make the quality of their lessons better. CW