Styrofoam ball, 3" diameter, individual

Styrofoam ball, 4" diameter, individual, for science experiments.

Styrofoam ball, 1.5" diameter, individual, for science experiments.

Pack of four balls.

Two 1.2" ceramic bar magnets with ends marked North and South.

Use these fine mesh iron filings to show magnetic fields of magnets! Look below for additional experiment ideas, the iron filings formula, formula weight, and more.

These aluminum weighing boats or weighing dishes have multiple lab uses.

This extra long slinky measures 7.5 cm in diameter, extends to 9 meters & compresses down to 10 cm. Watch it walk downstairs and use it to study longitudinal & transverse waves! See more product details below.

Pack of two balls.

Home Science Tools screw style 6-volt battery. Great for electricity and circuit labs!

Standard D-size batteries. You will receive either Ultralast or Dorcy brand batteries, depending on supply availability.