Why are raindrops the shape that they are? How do detergents work? Simply put – surface tension. This kit contains materials to demonstrate the concept of surface tension to your classroom using soap as a power source! Kit contains enough materials for 6 groups of 4. Aligned to the Next Generation Science Standards (NGSS)* Disciplinary Core Ideas: ETS1.C; PS1.A Performance Expectations: K-2-ETS1-3; 2-PS1-1; 2-PS1-2; 5-PS1-3 Cross Cutting Concepts: Patterns; Cause and Effect; Scale, Proportion and Quantity Kit Includes: 6 x 5mL Dropper Bottle Liquid Dish Soap 2 Foam Trays 6 Plastic Trays 6 Pepper Packets Developed for grades 2 – 5 DOT Info: Non-regulated WARNING: CHOKING HAZARD Small parts. Not for children under 3 yrs. *”Next Generation Science Standards” is a registered trademark of Achieve. Neither Achieve nor the lead states and partners that developed the Next Generation Science Standards was involved in the production of, and does not endorse, this product.