Educational toy set to promote STEM education through science experiments. The buoyancy set is missing the sponge star parts. There are no instructions. Everything in the photos is included. This is a used item. There are scratches and stains. Please understand that this is a used item before purchasing. - Set Contents: Sink or Float, Force & Motion - Age Range: 5 years and up - Brand: Learning Resources - Activity: Science Experiment - Package Contents: 32 pieces, 20 pieces - Educational Theme: STEM Education Thank you for viewing.