Using a Purchase Order?  •  Back to School  •  Spangler Science Club

Questions? Give us a Call: 1-800-223-9080

Jelly Marbles - Clear Spheres Kit

Small water beads that absorb 300 times their weight in water - Amazing!


Submit A Review


Item #: WSAS-500

Usually ships the next day.

Recommended for age 6 and up with adult supervision.

Availability: In stock

Jelly Marbles - Clear Spheres Kit


Place these tiny, solid spheres in water, and in just a little while you will have your own water beads. These superabsorbent spheres are the newest craze around the Spangler Science offices! What starts out as a 3mm pebble, quickly becomes an approximately 20mm ball of jelly! Similar to our Water Jelly Crystals, these clear spheres absorb a lot of water, plus they maintain their spherical shape when they are done growing. Want colored Jelly Marbles? Just add our Fizzers Color Mixing tablets to the water and you’ll have your own colored water marbles. We’ll even provide one of our popular Mini-mixing Trays to perform amazing feats of color mixing with our Splash of Color experiment! Not only are these super absorbent water-filled spheres fun, they teach a valuable lesson about the power of polymers. In fact, Jelly Marbles are an example of amazing Hydrogels... superabsorbent polymers that are saving the environment. Whether you think they look like water marbles, water beads, or clear spheres, you'll want to get your hands on these squishy, water-filled Jelly Marbles. Recommended for children ages 6 and up.

What's Included?
  • 1 25 gram pouch of Clear Spheres
  • 1 Mini-mixing tray
  • 3 Pipettes
  • 1 Packet of True Colors coloring tablets
  • 4 270 mL (9 oz.) plastic cups
  • 1 Petri dish - 101 mm (4 in)
  • 1 White measuring scoop
  • 1 Baby Soda Bottle with cap
    **Bottle cap color may vary.**
What Does It Teach?

Like all of our fun and fascinating polymer, or Hydrogel, products, these tiny spheres, teach a big lesson in color, light, and the importance these thirsty pebbles can play in maintaining a healthy environment. The possibilities for experimentation are endless when you drop these spheres in water. Put them in one of our Baby Soda Bottles and they grow to the shape of the test tube. Try drying them out to see how quickly evaporation can take over… and then use them again and again. Plus, you can only imagine the fun to be at the Spangler Science offices when Halloween rolls around... imagine the surprise when unsuspecting trick-or-treaters place their hands into a bowl of ooey, gooey, “eyeballs!”

Customer Reviews

Really nice kit Review by Duds

I'm a student and these are quite fun to play around with. They don't seem to teach much about polymers in school, well at least they don't talk about how fun they can be. (Posted on 5/4/13)

Takes patience, but fun Review by Ursula Boudreau

Both my boys enjoyed watching the jelly marbles grow, but 'right before your eyes' really means 2+ hours before you can start to get the full effect. We made red,blue and yellow ones when we got the kit and he filled the baby soda bottles and brought them to 'share' for school. Everyone oohed and ahhhed including his teacher. Even the before care bus driver wanted to feel the cool jelly marbles. (Posted on 3/23/13)

Super fun kit! Review by Jennifer

I spent all day today with my 3 year old (who is very difficult to keep entertained) playing with jelly marbles. She loved mixing the colors in the tray and watching them slowly grow (we checked on them every hour). You get TONS of little marbles in the 25 gram bag. I feel like we hardly used any even though we played with about 50 marbles. The included activity ideas are enough to keep kids engaged for many many days. Thanks for such a wonderful learning experience! (Posted on 2/21/13)

These Jelly Marbles are very impressive. Review by Lisa Paoletti

My 9 year old used this Jelly Marble Kit for her 3rd Grade Science Project. She had to give an oral presentation; her classmates and teacher were very impressed by her presentation. The price is inexpensive & this product is well worth it. (Posted on 2/1/13)

Loved 'em Review by Penny Halder

Several members of my family-old and young alike have been watching the progress of the jelly marbles. Everyone was fascinated and when they were finished growing it was fun to feel them and watch them bounce. (Posted on 1/1/13)

Lots of fun Review by Sam

My eight year olds love this kit. The jelly marbles are so cool. We put some in clear water and asked unsuspecting friends to put their hands in the water. They were surprised to find it filled with jelly marbles, which feel cool. We now are in the process of watching them get smaller out of the water. (A very long kitchen counter experiment). We tried the jelly marbles in colored water too as well as with Glow. The color fizzies are fun to watch dissolve in water and color it. (Posted on 12/4/12)

I love these jelly marbles! Review by Kelly Lavoie

I used these as "ghosts eyeballs" in a spooky science show and the kids LOVED them. I also love that that are biodegradable and can be used over and over. Adults love them too! (Posted on 10/23/12)

Marbles Review by j francus

Having so much fun with this product, it was great a party for a fun idea... (Posted on 10/13/12)

These are amazing! Review by Jane Roscoe

I used these for a Sunday School lesson (to show how God helps us to see things more clearly), during a worship service (as magnifying lenses), and I plan to use these for Vacation Bible School (as eyeballs for an Egyptian canopic jar). Everyone, young and old, is amazed at these wondrous spheres that feel and look so interesting. This is a great product that can be used very creatively! (Posted on 9/24/12)

AWESOME Review by Mike O'Connell

I found out about these from the Steve Spangler video on YouTube. I knew I had to get some to play around with. My friends' minds are all totally blown now. (Posted on 8/10/12)

This is a cute project Review by Kacey

this is really fun for kids! (Posted on 7/2/12)

Happy Jelly Marbles Review by Tamara Lewis

My daughter wanted the jelly marbles and chose to get them with her own allowance money, what a great purchase. You get everything for the money and wonderful learning activities meant for teachers, but just as good and even better for parents! Thanks! (Posted on 5/31/12)

Write Your Own Review

You're reviewing: Jelly Marbles - Clear Spheres Kit

How do you rate this product? *
1 star 2 stars 3 stars 4 stars 5 stars
  • What happens if some of my spheres break?
    Don't worry, we've included an entire section in the activity guide with experiments you can do with broken Jelly Marbles!

Warning - Small Ball Choking Hazard