Monday, April 8, 2013

fizzing colours

it's school holidays at the moment, so we are getting so spend a bit of time with some of our favourite school kids. that's one of the perks of being a stay-at-home-mum and a school teacher :)

today we got to hang out with miss m (seven), and mister s (five).

my lovely friend talia pinned this idea the other day, and i thought it might be a fun activity to try, in between planting some seeds in the garden, and going for a walk to the park.

i was right!
here's how it went...

fizzing colours

what you'll need:

bowls of bicarbonate of soda (filled approx 1.5cm deep)
ramekins of vinegar
different coloured of food colouring (we used red and yellow)

what to do:
  • mix a different colour of dye into each ramekin of vinegar
  • use the droppers to make marvellous colourful fizzing shapes and patterns in the bi carb.

m and s loved the fizzing, and were delighted by the way that the colours blended. they enjoyed swapping bowls and colours, and adding to each others creations.
this is a great way to learn about primary and secondary colours. next time i'll make sure i have some blue dye to hand so we can make rainbows with green and purple too.

arty enjoyed this activity too, though he was strictly a spectator. i couldn't tell if he was more interested in the fizzing colours, or the big kids laughing and exclaiming. 
either way, a good time was had by all.


  1. we used to use this method to make the lava for erupting paper mâché volcanoes. however, this is a great adaptation for the pre-teen crowd!

    1. i never got to do that at school - i feel like i missed out! :p