The tactile nature of mixing and pouring and stiring gives such pleasure to kids. We have made Goo/Slime in our workshops previously but this activity was welcomed again with great enthusiasm.
250ml bottle of clear glue
1/2 cup of warm water
1 teaspoon of Borax
2-3 drops of food colouring
Air tight container and markers
We began our activity by decorating our Slimy Goo containers. We also made several batches of Slimy Goo so we could experiment with colours and share them with each other.
Then it was time to mix!
Empty the glue into a bowl and add the desired food colouring. Mix the borax and water in a cup. Add the borax mixture to the coloured glue, stir and watch the reaction. Within seconds you’ll feel the long strands of molecules starting to connect. It’s time to abandon the spoon and use your hands to do the serious mixing. Keep adding the Borax solution to the glue mixture (don’t stop mixing) until you get a perfect batch of slime.
Did You Know….
The history of Silly Putty is quite amusing. In 1943 James Wright, an engineer, was attempting to create a synthetic rubber. He was unable to achieve the properties he was looking for and put his creation (later to be called Silly Putty) on the shelf as a failure. A few years later, a salesman for the Dow Corning Corporation was using the putty to entertain some customers. One of his customers became intrigued with the putty and saw that it had potential as a new toy. In 1957, after being endorsed on the “Howdy Doody Show”, Silly Putty became a toy fad. Recently new uses such as a grip strengthener and as an art medium have been developed. Silly Putty even went into space on the Apollo 8 mission. The polymers in Silly Putty have covalent bonds within the molecules, but hydrogen bonds between the molecules. The hydrogen bonds are easily broken. When small amounts of stress are slowly applied to the putty, only a few bonds are broken and the putty “flows.” When larger amounts of stress are applied quickly, there are many hydrogen bonds that break, causing the putty to break or tear.