Vortex! – PBS Kids 74 views January 29, 2016November 7, 2017 Mark Weddell2D Shape (No Ratings Yet) Loading... Visual discrimination – find matching shape quicklyOpen Activity Add to Bookmarks Other Suggested Activities Tangrams - PBS Kidsuse 7 Tangram puzzle pieces to create up to 13 shapes. Glowla's Contraption - PBS Kids60 seconds to estimate the sum of a group of numbers. The gamegives kids an… Symmetrizer - PBS Kidsreflections and angles through experimentation with a kaleidoscope.