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Hydrogel: This completely non-toxic powder absorbs up to 500 times its own weight in water and is the 'secret' ingredient used in applications ranging from babies nappies to perpetual growing plants
Reading together 9
hilarious and empowering graphic memoir
and the author of several books on aspects of child development
current European safety standards
Hurricane Tube 200 Numicon Firm Foundations Teaching Pack Hydrogel: This completely non-toxic powderIt wasn't easy but we've made a bubble column without water. The adjustable speed fan drives a current of light beads up and down the tube. Radio remote colour changer not included.
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