"PARKWAY PLASTICS, INC."

Great for teaching that density depends of both mass and volume, students can't seem to put these spheres down! Two steel spheres are great for teaching the skills of observation and deduction.

These free-running plastic pulleys are durable in design.

The Complete Precision Air Table helps investigate low-friction collisions.

With the Force Mechanism Trough, students can research acceleration and the effect of gravity on a moving body by propelling steel balls or a wood block down an aluminum trough track.

A simpler version of the Advanced Pulley Demonstration Set, this model includes eight single pulleys and two double sheave pulleys in addition to EISCO ball bearing frictionless pulley.

This gyroscope will spin for several minutes.

Ideal for small pulley systems, cord is available in a variety of colors, strengths, and lengths.

This package of plastic pulleys contains 25 each of 20, 30 and 40 mm diameter pulleys with 3.2 mm bores and one 10 mm pulley with a push fit to a 2 mm motor shaft.

High Quality and Economical

An economical digital stroboscope.

With the Large Plastic Dynamics Cart, students can explore the changes in motion that occur in a dynamics cart when different amounts of net force are applied.

Gram Centimeter Plastic Cubes

Smooth running pulley for investigating mechanical advantage.

The Simple Metal Gyroscope provides a hands-on gyroscope experience.

Compare How Different Gear Configurations Function

Educators can conduct a comprehensive array of density experiments with the density/slope class set.