Just Think Toys Bathtime Consruction Building Toy (Expansion Pack A New) WaterBlocks bring ball runs, water runs, and educational block play into the bath tub Expansion Set lets children build bigger water runs, ball runs, water falls and more in the bath Sometimes, the most educational toys are the simplest toys - toys with lots of open-ended possibilities that encourage young minds to think, to create and to explore The best of these toys provide progressive layers of challenge for children to discover as they grow At their very best, these toys encourage exploration, reward discovery and empower our children