Check the listing for details. 142 PLASTIC TANGRAM / PATTERN BLOCKS - Manipulatives (6 different shapes/colors). Condition: Used. Listed at 19.99 USD. 142 PLASTIC TANGRAM / PATTERN BLOCKS - Math Manipulatives ***1 cm thick, smooth texture*** 6 Different Shapes/Colors: 44 blue rhombus shapes 47 white diamond shapes 20 green triangle shapes 18 red trapezoid shapes 10 orange square shapes 3 yellow hexagon shapes EXCELLENT RESOURCE FOR PARENTS, HOMESCHOOLERS, TUTORS, TEACHERS... **These blocks are awesome for learning how different shapes can be combined to make other shapes! It is a great help when children are learning about geometry, to actually have hands-on materials to manipulate into different shapes!**They are also fun for designing and learning about patterns! **Kids (and sometimes adults ;-) will love playing with the shapes and making various designs! Then, you can discover all the squares, triangles, etc. in your designs! These materials were purchased from a school district's surplus sale. We ship within 1-2 business days of receiving payment. Thank you!