This activity set includes 10 manipulatives, 1 tugboat, 1 sorting bowl and an activity guide. This early STEM resource assists in the observation of floating or sinking concepts such as weight, volume, density, buoyancy and more. Children can predict an object''s ability to float or sink by observing its physical attributes. Children can also practice classifying and sorting the manipulatives into "floaters" or "sinkers." Children can start with beginner STEM lessons and move to advanced concepts. || Includes: 1 x Sorting Bowl, 1 x tugboat, 8 wooden Geo Solids, 10 x 1" plastic Geo Solids, 8 x 8 cm Geo Volume Solids, 4 x 2 cm foam cubes, 4 x 2 cm plastic cubes, 6 x Transparent Pattern Blocks in 6 shapes, 12 x Plastic Stacking Weights, 12 x Stacking Counters, 6 x small Pet Counters, 6 x big Pet Counters and an activity guide. || For ages 3+. || WATER TANK NOT INCLUDED.