US$ 69.99
a compound unit for demonstrating multi-rope mechanical advantage in physics activities
adjustable from 0 to 45 degrees with an alignable pulley and included pan and roller
this metal wave helix demonstrates pulse propagation
Tandem double plastic pulley pairing 38mm and 50mm low-friction wheels on an open-sided steel frame
Super Taster Genetic Taste Test Kit with 4 Paper Types Clearance a compound unit for demonstratingPackaged as a biodegradable classroom kit, this super taster set pairs PTC, sodium benzoate, thiourea, and control strips for a fuller genetic taste perception activity.
US$ 69.99
US$ 69.99
US$ 11.99
US$ 63.99
US$ 34.95