This Specimen Density Set consists of a set of 10, one inch density cubes in a storage box. Materials included are: Acrylic, Aluminum, Brass, Copper, Maple, Nylon, Pine, Poplar, PVC and Steel/Iron.

Set of 12 different half-inch diameter specimens of varying lengths, supplied in a wood storage block. The set includes cylinders of Aluminum, Brass, Copper, Glass, Hard Rubber, Delrin, PVC, Acrylic, Teflon, Nylon, Maple and Pinewood.

This Newtonian Demonstrator is a large size to clearly explain the theory. Wooden frame consists of five nickel plated steel balls of uniform mass suspended from the frame. Includes instructions. Size: approx. 9" L x 7" W x 8" H.

For experiments in velocity, acceleration, momentum, elastic collisions, and more! Learn by using this Dynamic Carts Set. The plastic cars have deep wells for additional masses, includes two rubber bumpers for inelastic collisions, two spring loops for elastic collisions and instructions. Each measure 5-1/8" x 2" x 1-3/8".

Designed for either teacher-directed instruction or independent use by groups of 2-4 students, each Learning Center focuses on a key curriculum concept and includes 4 Visual Learning Guides, each focused on the same topic. Each laminated, 4-page guide features an easy-to-follow, graphic overview of the topic; "Write-On/Wipe-Off" activities & graphic organizers; and a set of guiding, assessment review questions. Also included is a Curriculum Mastery Game featuring 1 set of 30 illustrated, self-correcting question cards; 1 laminated game board; and materials for up to four players. Packaged in a durable zippered, vinyl pouch, the Learning Center is a ready-to-use resource for the classroom, after school programs or home practice, review and test prep!

This kit shows you how to make a scale to weigh many household objects by use of Hooke's Law. Comes with a tape measure, a set of colorful plastic hex weights, a highly accurate special spring, and a detailed activity guide. Ages 7+.