Thames & Kosmos STEM Water-Powered Mechanisms Kit, 47 plastic pieces, 8 years+

The Thames & Kosmos Water-Powered Mechanisms STEM kit harnesses the power of air and water to make things move. The child builds six different air- and water-powered models, discovering the laws of physics and their applications in real-world engineering. The set turns experimentation into a concrete game, where each construction step shows how stored energy becomes motion.

The operating principle is easy to observe: pumping water increases the air pressure inside, and upon release, the mixture of air and water is expelled, causing movement in the opposite direction. Many mechanisms, from ancient ones to modern ships and rockets, use the same water-power technologies, allowing the child to understand a real engineering concept firsthand.

The kit contains 47 pieces, along with an instruction manual and information that guides the construction of each model and explains the observed phenomena. The child can experiment to test the differences between water and air and learn why the mechanism needs both to function. It is a practical way to introduce physics and propulsion concepts through guided play.

The product has been recognized with several awards: The Toy Insider 2022 Spring & Summer Gift Guide, the 2022 PureWow Happy Kid Awards for Introduction to Physics, the 2022 Purdue University Engineering Gift Guide, and the 2022 Oppenheim Toy Portfolio Gold Award. The kit is made of plastic. The recommended age is 8+ years. Adult supervision is recommended during play, and instructions should be read before use, followed, and kept for reference.

Frequently Asked Questions

How many models can be built with this kit? The kit allows for the construction of six different air- and water-powered models using the 47 included pieces.

What age is recommended for this product? The recommended age is 8+ years.

How do the mechanisms in the kit work? By pumping water, air pressure increases inside, and upon release, the mixture of air and water is expelled and causes movement in the opposite direction.