Purple Cow: Crazy Scientist LAB Hydrophobic Sand building No wave tumble can keep

No wave tumble can keep it down

a bright-green tree python guards her eggs

one rolling rattle and one dog on wheels

the parts are solid wood

encouraging open-ended

Purple Cow: Crazy Scientist LAB Hydrophobic Sand building No wave tumble can keepScience kit for young researchers About this kit: It looks like ordinary sea sand and it feels like ordinary sand but it is anything but ordinary !!! In this kit we explore the fascinating scientific qualities of hydrophobic sand and it's uses. We will compare it with regular sand and witness the amazing differences. Does it really stay dry when taken out from water?! How does it assist us in prevention of natural disasters? In a series of 10