Liquid Soil” Plant Polymer & Activity Guide, Set of 10

Solid crystals of superabsorbent polymer absorb water to form clear “gel” crystals that facilitate the viewing of root and shoot development of various plants. The crystals hold up to 400 times their weight in water, then shrink back to their original size after air or oven drying, ready to be used again. Each 1 oz packet of crystals includes an activity guide featuring investigations into the moisture-holding capacity of sand, plant growth and tropisms. Also helps plants survive over extended breaks...

Solid crystals of superabsorbent polymer absorb water to form clear “gel” crystals that facilitate the viewing of root and shoot development of various plants. The crystals hold up to 400 times their weight in water, then shrink back to their original size after air or oven drying, ready to be used again. Each 1 oz packet of crystals includes an activity guide featuring investigations into the moisture-holding capacity of sand, plant growth and tropisms. Also helps plants survive over extended breaks...