Stemwurks

Description: NSI International 49009 Smithsonian Mega Science Lab The Smithsonian Mega Science Lab has six STEM kits in one! Observe the process of crystal formation, assemble and paint a model of the earth and moon, and erupt your very own volcano...

Description: NSI International 49010 Smithsonian Electronic Crystal Growing Kit The Smithsonian Electronic Crystal Growing Kit gives kids all the tools they need to grow frosty diamond-shaped crystals using potassium sulfate and spiky crystals with...