Unbranded Building Blocks Marble Run sku-17438963770

These Unbranded Building Blocks, sku-17438963770 and UPC 738253159076, make a 3 in 1 marble run for children aged 3 to 8. Children can build tracks, roll marbles and race them to the finish line. The colorful pieces have smooth, rounded edges sized for small hands. A detailed manual gives instructions for three models, and the pieces can expand existing marble structures.

Building and playing offer hands-on practice with spatial thinking and social interaction.