"The Mystery of Lyle and Louise"

Makes demonstrations viewable by the entire classroom.

Individual spherical glass lenses.

Ideal selection for use with a ray box.

Bulk hole plates to expand your TeacherGeek collection

For Versatile Optical Applications

Individual spherical glass lenses.

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.

All Types and Sizes for all Optical Applications.

Reveal the Nature of Color and Light

Provide a convenient way to illustrate the properties of lenses to students.

Uses conductive play dough and insulating play dough to teach electrical circuits basics in a fun, hands-on way.

Individual spherical glass lenses.

A redefined and extremely robust hand-held gyroscope.