Growing Spheres (Three Sizes) at Educational Innovations


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Growing Spheres - Regular
GB-710

50 g (~4600 spheres)

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1 or more:

$5.95 ea.

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Growing Spheres - Large
GB-720

50 g (~2970 spheres)

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$7.45 ea.

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Growing Spheres - Jumbo
GB-730

50 g (~1215 spheres)

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$8.95 ea.

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Place these hard crystals in water and they expand about 300 times, producing gel-like spheres. Students love to feel the slippery, spherical gel! The Large size start with a diameter of about 3.0 mm and end with a diameter of about 20.0 mm. Ask students to determine the change in volume, using V = 4/3 pr³. Great for starting seeds and growing plants so that the roots can be seen! Can be colored using food coloring. The polymer is similar to our super-absorbent, polyacrylamide polymer (#GB-5B and #GB-3) and can be dried and reused. Now available in three sizes: Regular (~1.4 cm expanded), Large (~2.3 cm expanded), and Jumbo (~3.3 cm expanded)! (Each package contains 50 grams.)

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Growing Cubes

Same hydrophilic polymer, but made into different cubic shapes that can be stacked. 50 grams (approx. 290 cubes)

Warblettes Activity Book

Filled with classroom activities and student project ideas related to this amazing hydrophilic polymer, this book is an excellent teacher resource!

Water Gel Crystals - "Ghost Crystals"

Placed in water these crystals absorb many hundreds of times their own weight and become virtually invisible.

Water Gel Spikes

When placed in water these 1" long, 1/4" thick clear, colorless spikes expand to several inches with a corresponding gain in mass as they absorb water.