Sunday 17 January 2010

Rainbow Salt Bottle

I'm not sure if there is a proper name for this but that is my name!
What you will need:
  • small glass bottle with a lid
  • funnel
  • salt
  • sidewalk chalk
  • spoon
  • jug
Have all the equipment set out on a tray.
First measure 2 spoons of salt into the jug - you can adjust the amount to suit.
Take the chalk and grind it into the salt, the salt will change colour.
Using the funnel, pour the salt into the glass bottle, then repeat with another colour of chalk, keep going until the bottle is full.
Then when you have finished you will have a pretty bottle like this...
Ebi-kun really enjoyed doing this, once he had done the 5 basic colours he wanted to know what would happen if he used two chalks in one pot of salt, so I encouraged him to try and suggested he used the primary colours. Although he knows blue and yellow make green he still seemed surprised when it happened! One tip when colour mixing - this or other mediums, suggest that the child starts off with the weaker colour, so in this case he coloured the salt yellow first then added the blue (you only need a bit of blue to make it turn green).


  1. What fun! I see this happening in my classroom soon :D

  2. Oh, this will be so great when they have all done the basic colour mixing to death! I just need a few supplies. Be right back!

  3. Never thought to do this with chalk before...great idea!

  4. Oh how pretty! What a fun project. Thanks so much for the how-to, I'll be linking.

  5. Just found you via your comment on sew liberated- love this idea thanks


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