"Biology Clearance"

This newly designed rheostat features a protective cover.

Each pocket-sized volume contains hundreds of illustrations and descriptions of the most common, important, and striking examples of each type of animal, insect, or other specimen.

Visualize nuclear science.

Proper aeration is a must.

A slender probe gauges the soil mixture at the roots of a plant, while a light sensor on the front of the unit measures the amount of ambient light.

Operates 1/2 to 3 volts, 100ma start-up / runs at 15ma no load.  Strong torque - 300 RPM @ 1/2 volt. Great for gear drives.  2mm shaft dia. Size 1 1/4" dia x 1 1/4" long. 

Close-Up Cross Section.

This balance is the first major advancement in teaching simple machines in decades.

Bulk TeacherGeek clips to expand your TeacherGeek collection

Excellent For Storing Standard Sized Slides

Classic Demonstration of Convection Currents

The Exo-Terra® Faunarium is an easy to use, stackable, plastic all-purpose terrarium for reptiles, amphibians, mice, and arachnids and insects.

Reveal the Nature of Color and Light

The Easy Cutter is designed to cut a variety of materials and components such as wood strips, connector strips, dowels and more.

Reliable kit in a quality carrying case!

This self-contained apparatus explores wave velocity.