"Ward's® Thermochemistry In The Bag Inquiry Demonstration Activities"

These free-running plastic pulleys are durable in design.

Individual spherical glass lenses.

Unit consists of a sturdy metal frame carrying a DC motor with an eccentric shaft for exciting the vibrations. Clamp the frame to a table, attach a string and then simply use masses and a pulley to put tension on the string.

White, mature, friable.

This updated Ray Box uses five super bright LEDs for bright, white rays that are clearly visible.

Individual spherical glass lenses.

Economical pulley for simple machine experiments.

Create a balanced ecosystem in your aquarium with the addition of these small, freshwater algae eaters. They reproduce rapidly, laying their eggs on the glass sides of the aquarium.

This base platform supports the full range of Visual Scientifics activities and accessories.

Pulley with metal clamp attached.

High-speed pulley with low friction design mounted on a rod for easy integration into experiments.

Perform an electrolytic redox reaction to create tin crystals in a solution.

Dilute quantities to any volume as needed.

Drilled balls are used for pendulum bobs or impact experiments, while our other balls are suitable for collision apparatus and density/volume experiments.

Students find the answers to such questions as how much bacteria does soap or mouthwash eliminate, and which mouth contains more bacteria — a human or a dog.

Red, earthy, in natural chunk form; common pigment ore.