Water Beads

After being inspired by Play At Home Mom, I purchased a heap of these cool water beads on ebay.  They are made of non-toxic polymer gel and start off a little smaller than mustard seeds but when immersed in water will swell to the size of large marbles.  They feel jelly like and last forever - if they start to shrink I just immerse them in some more water for a couple of hours.

Showing various stages of growth/absorption

Water bead sensory tub and sorting into ice mould 

Water beads in the bath - trying to 'catch' them with slotted spoons and a seive

On our recent trip to our local market I saw many stalls selling these water beads for a couple of dollars a packet (which makes about 1 cup of beads) - I bought ours for $2 for 10 packs including postage, and they're the same brand!

I am saving the packs of clear beads to do an upcoming experiment by colouring the water they grow in to see if they take on the colour.