Looking for Our Best STEM Kits?

It’s not just fun science kits in our bestseller collection. Our selection includes our best STEM kits as well. Our STEM kits combine multiple educational disciplines into easy-to-use lessons and instructions that encourage learning, exploration, and critical thinking in children. There’s a reason why our kits are among the best science experiment kits on the market. We aim to educate and entertain with every kit, creating lasting memories that foster scientific curiosity and exploration.

  • Big Bucket of ScienceBig Bucket of Science

    Big Bucket of Science Test Tube Experiments

    $64.99
  • Blizzard in a BoxBlizzard in a Box

    Blizzard in a Box

    $24.99
  • Boo Bubbles - Dry Ice Smoke BubblesBoo Bubbles - Dry Ice Smoke Bubbles

    Boo Bubbles™ – Dry Ice Smoke Bubbles

    $29.99
  • Color Fizzing TabletsColor Fizzing Tablets

    Color Fizzing Tablets 100-Pack

    $8.99
  • Color Fizzing TabletsColor Fizzing Tablets

    Color Fizzing Tablets 300-pack

    $24.99
  • Energy Stick ConductorEnergy Stick Conductor

    Energy Stick Conductor

    $14.99
  • Energy Stick

    Energy Stick®

    $10.99$199.80
  • Geyser Tube®

    Geyser Tube™ Mentos Geyser Kit

    $9.99$12.99
  • Insta-Snow PowderInsta-Snow Powder

    Insta-Snow® Powder – Fake Snow

    $7.99$24.99
  • Water Jelly Marbles - Clear SpheresVanishing Jelly Marbles

    Jelly Marbles – Water Polymer Beads

    $12.99
  • Magic SandMagic Sand

    Magic Sand

    $6.99
  • Magic Sand Starter SetMagic Sand Starter Kit

    Magic Sand Starter Set

    $12.99
  • aShape Gel™ Deluxe SetShape Gel Deluxe Set

    Shape Gel™ Deluxe Set

    $24.99
  • Shape Gel™ Starter SetShape Gel Starter Set

    Shape Gel™ Starter Set

    $12.99
  • Snowman Science Starter SetSnowman Science Starter Set

    Snowman Science Starter Set

    $12.99
  • String Slime Deluxe SetString Slime Deluxe Set

    String Slime™ Deluxe Set

    $24.99
  • String Slime™ Starter SetString Slime Starter Set

    String Slime™ Starter Set

    $12.99
  • Water Cubes - Superabsorbent PolymersWater Cubes - Superabsorbent Polymers

    Water Cubes – Superabsorbent Polymers

    $12.99
  • Water Gel Starter SetWater Gel™

    Water Gel Powder

    $12.99$29.99
  • WindbagsWindbags

    Windbags – One Breath Bernoulli Bag

    $6.99$49.99

Best Science Kits & Science Toys

For more than 25 years, Steve Spangler Science has been bringing FUN to science, with these popular items! Introduce your kids to the best science kits on the market with our proven, customer-rated projects. Our fun science toys are specifically designed to bring a sense of wonder and joy to your little ones. By shopping our bestsellers, we’re offering you the absolute best science toys we have available.