Constant speed plastic car for inclined plane experiments. Select from two speeds: fast and slow. Place weights in the upper chamber to show mass and speed relationship. #11;5¹⁄₂" x 2¹⁄₂" x..

Each Demonstration Model measures approximately 2-1/2 times the size of the student version and is great for classroom demonstration. Defined as a sloping plane for lifting heavy loads to high places. The small weight car also has small wooden wheel..

Make your own models! This themed set features some of the most impressive models in the Engineering Series. Includes instructions and a 36-pg. activity book.

Defined as a sloping plane for lifting heavy loads to high places. The small weight car also has small wooden wheels. Weight included with plane. Excellent for small groups or individual study. Includes a detailed activity guide which details the histor..