Growing Spheres

Growing Spheres - Small

$6.95
14 points (Points accrued: 0)
50 g (~3000 spheres)
Item #: GB-702

Growing Spheres - Regular

$6.95
14 points (Points accrued: 0)
50 g (~2500 spheres)
Item #: GB-710

Growing Spheres - Jumbo

$6.95
14 points (Points accrued: 0)
50 g (~870 spheres)
Item #: GB-730
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  • Description
  • Video
  • Lesson Ideas
  • Product Reviews
  • NGSS
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 Regular size starts with a diameter of about 2 mm and ends with a diameter of about 14 mm. Ask students to determine the change in volume, using V = 4/3 πr3. Great for starting seeds and growing plants so that the roots can be seen! Can be tinted using food coloring. The polymer is similar to our super-absorbent, polyacrylamide polymer (GB-5B and GB-3) and can be dried and reused. Small (~1 cm expanded), Regular (~1.4 cm expanded) or Jumbo (~3.3 cm expanded)! (Each package contains 50 grams.)

Item # Style Size Grams # of Spheres
GB-702 Small ~1 cm (0.4") 50 ~3000
GB-710 Regular ~1.4 cm (0.55") 50 ~2500
GB-730 Jumbo ~3.3 cm (1.3") 50 ~870

Download the MSDS of this product.

Read more on our Blog - The Magic of Seeds, Spring and Science!

Read more on our Blog - Using Growing Spheres for 3D Modeling

Read more on our Blog - Growing Spheres Help Students Absorb Scientific Principles

Read more on our Blog - Ghost Eyeballs | Growing Spheres


Adult supervision required. This is not a toy. Do not ingest.