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

Discover the Mechanical Advantage of Different Pulley Combinations

Replacement hanger for your stainless steel slotted weight set.

Compare the falling rate of a feather and a guinea (coin) with air resistance and in a vacuum.

These free-running plastic pulleys are durable in design.

Ensure perfect geometric alignment of your balsa fins on any Estes model rocket.

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

Economical pulley for simple machine experiments.

Pulley with metal clamp attached.

How does a glow stick work?

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

Samples of Intrusive and Extrusive Igneous Rocks

Simulate the effects of nitrogen oxides and sulfur oxides on the germination of radish seeds.

Set of three undrilled balls.

Economical pulley for simple machine experiments.

Durable coiled spring with looped ends.

This LCD clock keeps time using potatoes, soda, or plants.