5-in-1 engineering kit: build five, fun functional models including a desert racer, motorcycle and launcher, catapult, wind mobile, and balancing dragonfly.
 Learn about force, motion, and energy as you assemble and experiment with your models--no batteries required!
 Includes a 24-page, full-color manual with clear language, simple step-by-step illustrated instructions, and scientific explanations.
 Entertaining, affordable, and educational purchase--great birthday gift!
 For ages 6 and up

No expiration
No cash value