
things you will need
- 5-6 x rainbow colours of play dough
- 5 x LEDs (red, yellow, green, blue, white)
- 1 x 4AA battery pack (and batteries)
- Cotton wool

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Roll out the dough
Roll out each colour of dough into a long strip, decreasing the length of each strip.

Make the rainbow
- Connect each strip of dough to the next.
- Bend to form an arch and trim as required.

Add an insulator
- Place the cotton wool to the right hand side of the rainbow arch.
- Roll out some leftover dough and attached to the cotton wool.
Things to know
The cotton wool will prevent a short circuit. You could use any insulator here - plastic, insulating dough, a piece of rubber.

Add the light
- Place the long leg of each LED into the matching colour dough strip.
- Place the short leg of each LED into the single piece of dough connected to the right-hand side of the cotton wool.

Power it up
- Make sure the battery pack is OFF.
- Insert the red battery wire into first rainbow strip (red).
- Insert the black battery wire into the dough attached to the right-hand side of the cotton wool.
Things to know
Make sure the red battery wire is placed into the rainbow as the LEDs will only light up when the long leg is connected to the positive (red) end of the battery.

Shine bright
Turn the battery pack ON and watch your rainbow light up.
