Simple Manual Motor Model with 2 Magnets, 5.5" Pack Size_100 paired with sphere and cylinder

paired with sphere and cylinder counterparts to extend the electrostatic-curvature comparison up the size scale

Rotary-knob resistance substitution board offering twelve discrete values from 33 ohms to 10M ohms with 4mm lead connections

and inner ear anatomy for upper-level anatomy teaching

this wooden block-and-tackle apparatus lets students count supporting strands and measure how each added pulley reduces effort

Simple Manual Motor Model with 2 Magnets, 5.5" Pack Size_100 paired with sphere and cylinderHand cranked simple motor model on a 5. 5 inch base with two labeled magnets and 4mm sockets, demonstrating magnet action, induced current, and the alternator principle with stationary inductors.