Saltwater Fuel Cell Robot deals 2 goals make and one

2 goals make and one floating ball in each set

A colorful way to spark imagination and add fruity flair to any art kit

2 spring-loaded shooters and adjustable wings for flight and landing

eager to discover new places and make new friends along the way

Saltwater Fuel Cell Robot deals 2 goals make and oneBuild a sleek, modern (and adorable!) walking robot powered by salt water and magnesium no batteries required! Discover how a metal air electrochemical cell stores and discharges electrical energy using a simple saltwater solution. Explore the science of electricity, currents, and electric potential. An innovative pump mechanism provides a steady drip of salt water onto the magnesium plates and the robot walks for up to one hour on just one drop of