"The Mystery of Lyle and Louise"

Sand, pebbles, and gravel are all ideal for earth science experiments and simulated excavations.

Common geological materials conveniently packaged for lab, classroom, or industrial use.

With this generator, students have the power of electricity in the palm of their hands.

This is full size right hand with cutaway views to reveal effects of osteoarthritis.

For first aid/rescues.

A Great Comparison To a Human Hand.

Full size right hand with cutaway views to reveal the effects of rheumatoid arthritis on ligaments, flexor and extensor tendons, muscle, cartilage, bones, synovial membrane, and joint spaces.

Good quality hardwood meter and half-meter sticks with a natural finish.

Dropping bottles are made of low-density polyethylene.

7 mm-thick hardwood meter stick has permanently engraved black scales in metric and English.