Grow Beasts & Polymer Chemistry Kits

Gro Beasts are some of our most popular products. They are fantastic for any grade level, and affordable enough to hand out to every student in your class! The Large Gro-Beast Alligators start at about 3 inches long and grow to over a foot long when placed in water! When placed in water, Water Gel Crystals - or "Ghost Crystals" - absorb many hundreds of times their own weight and become virtually invisible. Place Growing Spheres in water and they expand about 300 times, producing gel-like spheres. Now available in three sizes! We also carry growing Cubes and Spikes.
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  • Large Gro-Beast Dinosaurs (Set of 6)

    Large Gro-Beast Dinosaurs (Set of 6)

    When dry, these little dinos fit in the palm of your hand...
    $6.95
  • Growing Frogs (Pack of 30)

    Growing Frogs (Pack of 30)

    Review star icon Review star icon Review star icon Review star icon Review star icon (1 review)
    When placed in water these amphibians expand about 600%!
    $9.95
  • Growing Spheres

    Growing Spheres

    Review star icon Review star icon Review star icon Review star icon Review star icon (25 reviews)
    Place these hard crystals in water and they expand about 300 times.
    $6.95
  • Growing Cubes

    Growing Cubes

    Review star icon Review star icon Review star icon Review star icon Review star icon (3 reviews)
    Place these small cubes into water and watch them expand!
    $6.95
  • Large Gro-Beast Alligator

    Large Gro-Beast Alligator

    Review star icon Review star icon Review star icon Review star icon Review star icon (15 reviews)
    These alligators grow more than 6" when placed in water!
    $3.95–$23.85
  • Water Gel Spikes

    Water Gel Spikes

    Review star icon Review star icon Review star icon Review star icon Review star icon (3 reviews)
    Great for quantitative measuring experiments.
    $3.50
  • Water Gel Crystals - "Ghost Crystals"

    Water Gel Crystals - "Ghost Crystals"

    Review star icon Review star icon Review star icon Review star icon Review star icon (3 reviews)
    Placed in water these growing crystals become virtually invisible.
    $6.95–$14.95
  • Small Gro-Beast Dinosaur

    Small Gro-Beast Dinosaur

    Review star icon Review star icon Review star icon Review star icon Review star icon (5 reviews)
    They double in length and more than quadruple in weight in water!
    $0.95