"Biology Clearance"

Pieces of 2.5mm thick solid plastic have fractional values are printed on each tile.

Aluminum spring scales, built to last in any lab.

Visualize fusion and energy.

These long-lasting aluminum tuning forks have a full sound.

Reliable kit in a quality carrying case!

This self-contained apparatus explores wave velocity.

This wooden machine has a sturdy wooden construction ideal for classroom use.

Bulk TeacherGeek clips to expand your TeacherGeek collection

Excellent For Storing Standard Sized Slides

Close-Up Cross Section.

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

The DNA Playground™ is a heating and cooling all-in-one unit with touch controls and sensors.

Proper aeration is a must.

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. 

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.

Formaldehyde-free bullfrogs. Available in pails or vacuum packs.