"activities&amp"

This working model thermostat will demonstrate how differential expansion is used to control temperature. A bimetallic strip is used to open or close an electric circuit when temperature changes. The contacts will carry about three amperes. The unit can be operated with a 6 V lantern battery, low voltage power supply, or a blow dryer. Mounted on a metal base; approximately 15 cm high.

How are diseases transmitted?

This kit demonstrates the process of starch digestion.

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Basic college level general chemistry activity.

Pondwater Sample Guaranteed to Contain a Variety of Organisms

Oxidation and Reduction of Metals

How does a glow stick work?

Can a Criminal Get Away with Murder if He Cleans Up the Blood?

Students study food web relationships and how natural and human induced changes in the environment such as severe storms, drought, floods, housing developments, road salt, and fertilizer runoff upset the balance of ecosystems.

Learn About Dichotomous Keys by Classifying Seeds

New and improved balloon design and activities!

Ideal learning tool for introductory geology classes.

8-core Propeller microcontroller pre-wired to a host of popular peripherals for fast and fun experiments.

Students gain a better understanding of the structure of matter.

Full Class Exploration of Ecosystems

Identify a protein defect using agarose electrophoresis.