Guidecraft blocks has created a set of 8 blocks (4 rectangle & 4 half moons), to help kids learn about Colors, lights, and sounds; by combing the blocks in different arrangements. Blocks are made with smooth hardwood frames & plexiglass acrylic windows that contains a colored liquid. If you want the light from the blocks to be brighter, place them on top of a LED Activity Tablet.
A single standard rainbow block dimensions are 2.75in by 1.375in by 5.5in
Recommended for children ages 2 years and older.