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

letting students rub one half against the same cloth and compare insulator and conductor behavior in triboelectric charging

Walks students through four-stroke diesel operation on a 16-inch hand-cranked model

Tandem double plastic pulley pairing 38mm and 50mm low-friction wheels on an open-sided steel frame

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.