Hidden Pictures [Shape Matcher—More Shapes; Sizes & Orientations; Combination]
Activity Type: Computer Activity
Shape Matcher—More Shapes; Sizes & Orientations; Combinations
Special Thanks To

The research reported here was supported by the Institute of Education Sciences, U.S. Department of Education, through grant numbers R305K050157, R305A120813, R305A110188, and R305A150243. to the University of Denver. The opinions expressed are those of the authors and do not represent views of the Institute or the U.S. Department of Education.