Ideal for hands on investigation and water play this non-toxic sand can be moulded and formed into shapes underwater then lifted out to be used again and again. When immersed in water the sand stays dry. The kit includes 3lb of sand in 3 assorted colours as well as other useful resources such as teacher's notes.Super Sand Classroom Kit contains enough materials for twelve students to do several fun and educational experiments. The included bowls are made from corn and are 100% biodegradable!Contrast hydrophobic Super Sand with ordinary hydrophilic sand grains.Demonstrate real world examples of conservation of mass surface tension polarity and more as you sculpt mould and experiment with Super Sand.Watch in fascination as the sand repels the water and appears dry immediately after it is removed from water.All lessons are tied in practical applications of this amazing sand.Super Sand Classroom Kit Includes:Red Sand 454g.Yellow Sand 454g.Blue Sand 454g.Natural Sand 454g.24 Clear Bowls12 Spoons12 Student Hand-outs1 Teacher Guide