Motor Demonstration Board Pack Size_10 and a 1-degree protractor

and a 1-degree protractor

Jumbo three-dimensional frog dissection model with keycard demonstrates amphibian anatomy and organ systems for detailed vertebrate teaching

5 inch Alnico bar pair with steel keepers

the flywheel light enough to drive by breath for hands-on reciprocating-engine study

the drilled aluminum ball gives a lightweight contrast to steel and brass balls of the same size in pendulum period and momentum-transfer demonstrations

Motor Demonstration Board Pack Size_10 and a 1-degree protractorLow voltage DC motor with a current limiting series resistor on a demonstration base with 4mm plug connections, sized as a load that visibly spins when current flows in the circuit.