"PARKWAY PLASTICS, INC."
Feathers, Fur and Scales
Build your own hands-on investigations around these assortments of real feathers, fur, and fish scales. Help students discover the unique features of feathers, see how fur keeps mammals warm, and why scales have remained a fish favorite for millions of years.
Iron Fillings in Plastic Bubble
Demonstrate magnetic fields on your desk or overhead with this clear container of iron fillings. Using magnets, you can show students how the fillings move and cluster together.
Pulley Cords
Ideal for small pulley systems, cord is available in a variety of colors, strengths, and lengths.
Energy Ball
Perfect for demonstrating anchoring as well as connectivity, if one student puts a finger on one contact, another student puts a finger on the second contact and both then hold hands, the ball will light up.
Bare Copper Wire, 113 g Spool
A bare copper wire of the highest quality. Available in several standard AWG sizes.
Assorted Plastic Pulleys
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.
Conductivity Indicator Tester
Nine level conductivity meter shows the relative conductivity/resistance of liquids and solids. As the conductivity of the tested material increases, the number of glowing red LEDs will increase to a maximum of 8, which indicates a very good conductor. There will be zero glowing red LEDs if the material has a very low electrical conductivity (is a good insulator).

