Eisco Premium Acrylic Prism Set of 6 – Various Shapes in Wooden Box, Physics Lab Tool for Reflection & Refraction Experiments, Durable Educational Science Kit | 25.8x20.8x4.8 cm, 620 g

Eisco Premium Acrylic Prisms — Set of 6, Different Shapes, Supplied in Wooden Box | Used in Physics Laboratory | Reflection and Refraction Leaning | ‎25.8 x 20.8 x 4.8 cm; 620 g

EISCO Fine Iron Filings (100g) Easy Sprinkle Magnetism Science Experiment Kit | Perfect for Classroom Projects, Physics Activities, STEM Learning, and Educational Fun for Kids and Adults | Resealable Jar

EISCO Wave Form Helix Spring | Steel Slinky Coil for Physics Experiments and STEM Learning | 7.5cm Diameter, 3 Meters Length | Energy Transfer Science Toy for Classroom, Educational Labs, and Fun Activities