STURDY BLOCKS AND FRAMES WITH A PURPOSE: The Wooden Montessori Puzzle with 88 colorful and thick blocks for 3D fun is a perfect STEM eduational gift for Kids! WOODEN SMOOTH AND HIGHLY PIGMENTED: All puzzle pieces fit together perfectly, the set comes with a canvas bag to hold all russian blocks. The included booklet comes with suggestions and STEM game ideas in English and German. SET OF 2 PLUS SPARE PARTS: The sets comes with 2 wood frames, each with 40 tangram blocks, and it includes 8 spare blocks - because as mothers we know that one day a part may be missing... SPACIAL LESSONS: Kids learn spacial lessons, solving problems and color and shape recognition to train intelligence and brain. The STEM game also serves as dementia seniors activity and fun brain teaser! GUARANTEED FUN: There are endless way to play with the sturdy and thick puzzle blocks, so it lacks the frustration of standard jigsaw puzzle toys! Great gift for toddlers, boys, girls and seniors!