Thames & Kosmos - T550022 | Geek & Co. Science: Glowing Crystal Geode Science Kit Brand_Crayola Perform a number of sweet

Perform a number of sweet experiments and learn important physical science principles related to candy and cooking

Each Maple segment of the Rainbow Rattle can be flipped around to change the overall shape of the toy without becoming jumbled or tangled up

Reversible mechanical switches for railway for making right or left turns

you simply do your puzzle on the felt sheet

Four unique positions offer something for every stage

Thames & Kosmos - T550022 | Geek & Co. Science: Glowing Crystal Geode Science Kit Brand_Crayola Perform a number of sweetCreate your own crystal geode a round rock containing a crystal filled cavity. First, cast a plaster geode shell in the mould and then fill it with a crystal growing alum salt solution. The crystal solution contains an ultraviolet luminous pigment that gets incorporated into the crystals as they form, resulting in a geode that glows in ultraviolet light. An ultraviolet flashlight with holder, as well as a display stand for the geode, are included.