The Steve Spangler Science Magic Sand might look like ordinary sand, but just try to get it wet! Magic Sand begins as normal looking sand, until it's dyed and coated with a water-repelling polymer that keeps it dry. You can build sandcastles under water over and over again with this reusable science kit! After you're done exploring the science of water molecules and about the way hydrophobic products work, simply pour out the water and let the sand dry. It's exciting STEM learning that you can come back to time and time again. It also makes a fantastic stocking stuffer and holiday gift idea for ages 6 and up. This science experiment kit comes with an instruction card with 3 experiments that help bring the magic of science to life. Includes 3 test tubes: Blue Magic Sand – .52 oz (15 g), Red Magic Sand – .52 oz (15 g) and Yellow Magic Sand – .52 oz (15 g). You can use explore these activities at school or at home and bring engaging, hands-on science into your day!