Kids experiment with the motion of magnetic attraction and other early physics concepts with this magnetic wand and set of magnetic accessories. This kit is STEM approved by STEM.org supplying hours of educational fun. Develop critical thinking, cause and effect and problem solving to spark curiosity early. Details: Includes assorted colors 8.3" x 8.1" x 2.8" (21.082cm x 20.574cm x 7.112) package size 39 pieces For ages 5 and up