Smithsonian Perpetual Motion Machine Plush Educational Value: Demonstrates secondary mineral

Educational Value: Demonstrates secondary mineral formation

Celebrates the power and legacy of prehistoric creatures in a wearable form

This science-inspired tee brings the excitement of paleontology to everyday wear

Standard 54‑card set with detailed moon imagery that makes each card a little lesson in lunar science

Expertly crafted from research-grade polyresin and hand-painted

Smithsonian Perpetual Motion Machine Plush Educational Value: Demonstrates secondary mineralBuild a Perpetual Motion Machine powered by an invisible magnetic field! Ever wonder why scientists, engineers, and mathematicians have never been able to create such a machine without an external energy source like batteries? Explore different kinds of motion machines and understand why they didnt work. Learn about magnets and the First and Second Laws of Thermodynamics. Understand how batteries create the magnetic force to keep the machine