There is a class of vectors. The cross product and magnitude functions for vectors are also included. Graphing capabilities. Some user interface things such as mouse interactions with the 3-d space.

Thus, representations of numerical magnitude are both correlationally and causally related to arithmetic learning. As the flagship journal of the Society for Research in Child Development, Child ...

Project Summary The project explores the effects of spatial representations of number magnitude on children's learning of advanced arithmetic strategies, a key predictor of math achievement. A series ...