The building brick kit block construction toy set includes 5 different colors and 4 unique bricks in 2x2 pegs and 4x2 pegs to help children develop STEM skills from visual learning to gain strong sense of color matching, artwork, geometry, mathematics, logic, number counts, 3D architectural design, and even structural engineering at an early age and keep child occupied for hours of endless stimulating creative fun while still making education entertaining. The 100 pieces building block set const