"The Mystery of Lyle and Louise"

Reveal the Nature of Color and Light

The replacement chemicals kit contains 5g each of calcium chloride, cupric chloride, cupric nitrate, lithium chloride, potassium chloride, potassium nitrate, sodium bicarbonate, sodium chloride, strontium chloride and strontium nitrate.

A redefined and extremely robust hand-held gyroscope.

Bulk hole plates to expand your TeacherGeek collection

For Versatile Optical Applications

Individual spherical glass lenses.

Individual spherical glass lenses.

Makes demonstrations viewable by the entire classroom.

Ideal selection for use with a ray box.

All Types and Sizes for all Optical Applications.