Green Science: Potato Clock Common Brown Butterfly their yellow wing bar and

their yellow wing bar and red underwing plumage is visible

knowing when it is time to hunt and time to rest

Embark on a dazzling journey into the world of crystal science with our Crystal Science Chemistry Kit

By: Gerry Swan

as told through her paintings

Green Science: Potato Clock Common Brown Butterfly their yellow wing bar andNeed to tell the time, but you've only got a few spuds? This is the kit for you. Discover how to power a digital clock using only potatoes and no batteries. Once you're done with potato play, look around your kitchen to discover what other substances can power the clock. Recommended for ages 8 and over. 215x165x60mm, 200g approx