The 5 Piece H20 pour & explore set is a fun bath toy to experiment with water in an imaginative science Lab! Suction cup The tray to wall And insert the two test tubes and funnel inside. Pour water in each with the included beaker to see how the water filters through each! Use the pieces out of the tray, by dunking in water and seeing how water escapes each tube, funnel, and beaker! A fun way to conduct science experiments with water play.