Two glow-in-the-dark reactions occur in turn: one that is bright and quick, and another that is dull and slow. The oscillation between these reactions looks like a firefly on a summer night! There are enough materials to perform this demonstration 3 times. ?Aligned to the Next Generation Science Standards (NGSS)* Disciplinary Core Ideas: PS1.A, PS1.B Performance Expectations: ?MS-PS1-2 Cross Cutting Concepts: ?Patterns Engineering Practices: ?Analyzing and Interpreting Data ?Kit Includes: 3 Luminol-Thiocyanate Solution, 900 mL 3 Copper Sulfate Solution, 100 mL 3 Hydrogen Peroxide, 30%, 30 mL DOT Info: UN2014; Hydrogen peroxide, aqueous solution; 5.1 (8); PG II; Limited quantity equal to or less than 1 L. *"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.