Students can observe and measure how muscles contract. The muscles are shipped in glycerol which extracts most of the water soluble material leaving muscle tissue that can be identified and studied using a microscope. The muscle can also be stimulated to contract using the ATP chemical solution. There are enough materials for 15 groups. Aligned to the Next Generation Science Standards (NGSS)* Disciplinary Core Ideas: LS1.A Performance Expectations: HS-LS1-2 Cross Cutting Concepts: Systems and System Models Engineering Practices: Developing and using Models Kit Includes: 3 Sets of Muscles that must be stored at -4°C until you are ready to use it. Psoas Chemical A ( Salts) Psoas Chemical B (ATP Solution) Psoas Chemical C (Salts) 1 pack Microscope Slides 1 pack Covers Slips DOT Info: Non-regulated *”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.