The Light Crystal prism TEDCO

2016 Tedco Toys Smithsonian Institution Light Crystal prism science education

Smithsonian Institution Sea Monsters Prehistoric Pets Triops Eggs Sand Kit STEM

Smithsonian Crime Scene Fingerprint Kit STEM NEW Ages 8+

Crookes radiometer, specifically the model "The Sphere Powered By The Sun TEDCO.

Vintage Original Spinning Gyroscope TEDCO Physics Library Science Center

Crystal Radio Kit - Smart Labs - Smithsonian Institute AM Radio Tuner

Smithsonian earth science STEM Crystal Growing Kit New in Box Age 10+