Growing Cubes

Incredible cubes that grow 200 times their volume when placed in water!
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Airzooka Air Cannon

Airzooka Air Cannon
The amazing Airzooka will blow you away! Blast a harmless vortex of air up to 6 meters towards any object or person. Then have a good giggle after you mess up a person's hair, ruffle their shirt, dress or papers unnoticed from a distance.

In water, these incredible cubes grow about 200 times their volume. Wow! Just like our instant snow and growing bead products, these cubes are a type of superabsorbent polymer. Watch the gel-like transparent cubes disappear in water, then, magically reappear when the water is drained. Or leave them in the sun and watch them shrink. They can even be used to keep flowers alive in vases when you are done with your experiments. Available in clear or single coloured cubes.

Age: 6+ with adult supervision

What you get

5 gram packet of cubes ready to grow (cubes measure about 4mm).

How does it work?

The cubes take about 5 hours to fully grow in water. When fully-grown they contain up to 95% water giving the transparent cubes the ability to disappear when submerged. Their cross-linked molecules have a high sodium content attracting water into the polymer system through a process called osmosis. Leave the cubes out to dry and they shrink ready to be grown again. Try sprinkling some salt on the fully-grown cubes, does it have the same effect as drying? Lots of science in these cubes.


  • Hydrophilic (or water loving) substances. Compare them to hydrophobic (or water hating) substances like magic sand that never gets wet in water.
  • Why do the fully-grown transparent cubes seem to disappear in water? Investigate light and how it travels through different materials. Colour the transparent cubes with food dye. What effect does this have on light and their ability to disappear?
  • Superabsorbent polymers and their use in real life applications, like in babys nappies and agriculture to retain water in soil.
  • The process of osmosis. What happens when salt is sprinkled on the fully-grown beads?
  • Evaporation: when water evaporation occurs and the beads dry out, it is they are ready to grow again!


Not only do these make great science toys they can be used in vases of flowers or with candles as great home decoration.

WARNING: CHOKING HAZARD Small Parts. Not for children under 3 years.

FIRST AID: If swallowed do not give liquids, seek medical advice immediately.


More Information
Length (cm) 9
Width (cm) 6
Height (cm) 1
Age Group 5-6 Years, 7-8 Years, 9-10 Years
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FREE Shipping is available on all orders over $120 to anywhere in Australia!

Orders under the value of $120 incur a low flat rate shipping cost of only $9.95 to anywhere in Australia.

Express, Registered and International delivery options are also available. The cost for these premium shipping services will be automatically calculated during the checkout process.  Please conact us if you have any queries with these services.

In some cases we may need to apply a shipping surcharge to large or fragile items, especially to remote or non-urban locations. You will be contacted by us for confirmation if this additional charge is applicable.

How long will it take for my order to arrive?.

You should receive your order within 2 to 4 working days, although to some regional and out back areas it can take up to 2 working days longer. Orders going to WA also take a little longer, up to 6 working days.

All standard orders are shipped using Australia Post's eParcel service, so you'll be kept fully informed of the progress of your order during its journey to you. Aside from receiving regular email updates, you can enter your tracking number into Australia Post's website at any time for information about the delivery status of your order.

International delivery will take from between 1 to 4 weeks depending on the destination and potential customs clearance delays.

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We ship every Victorian business day. Orders received and paid for by 12pm AEST time will generally be shipped the same day.

If you require your order urgently, we have a next day delivery express service available.

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We ship to both Australian and International customers.

What shipping options are available?

The majority of orders are shipped using Australia Post's trackable eParcel service, with larger orders being sent by national courier.

We also have options for express or registered post. A number of international delivery options are also available. These can be selected during checkout.

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