Trundle Wheel Capacity_200mL Illustrates that sound needs a

Illustrates that sound needs a medium to travel through a 10-inch acrylic bell jar with internal buzzer

the disaccharide used as a simple-sugar source in fermentation and as substrate for invertase enzyme kinetics

Iodine clock reaction kit demonstrates reaction kinetics through dramatic color changes

with the open-spoke design optimized for photogate timing of rotational-motion experiments

displayed on a plastic-and-metal rack with a carrying handle for transport

Trundle Wheel Capacity_200mL Illustrates that sound needs aAudible click at every revolution on this trundle wheel with a one meter circumference, letting users pace long distances upright while reading partial meters on 1 cm scale divisions.