I think that this would be good for any age. The kids were barely 2.5 through 3.5, but I think the moms enjoyed the color change more than the kids. Younger toddler or even older kids would enjoy this with the older they are, the more you can go into the whole color change concept.
Props to Inspiration Laboratories for the idea!
- Cookie Sheet or tray to contain the mess
- Card stock or water color paper cut into Christmas tree shape
- Blue food coloring or liquid water color (we used blue water color)
- Yellow paint, food coloring or liquid water color (we used yellow finger paint)
- Baking soda
- Glitter (optional)
We started by reading Little Blue and Little Yellow, a very sweet book about a blue and yellow circle that hug until they turn green. Not a Christmas book, but it was kind of nice to be a little not Christmas for a second!
I mixed in baking soda with my blue paint and yellow paint with the vinegar. Before they started, I sprinkled a healthy dose of baking soda on the trees, just to make sure there was enough.
After they painted the trees blue, they added in some yellow. This change was so cool. The chemical reaction of the baking soda and vinegar was very subtle, and I think really just added a little magic to the color change. There wasn't enough yellow in our yellow paint so I added a bit of just yellow paint on top.
Next came the glitter, which I think Zander enjoyed the most!
We also dumped the yellow and blue together at the end and saw how more blue vs yellow changed the shade a bit. And then they found the glitter.
At the end Zander started whipping the paint brush around like he was renewing someone baptismal vows.
We've done several baking soda and vinegar activities and the kids usually seem to enjoy them. As I mentioned a little above, this one wasn't as pronounced on the eruption, though the amount of baking soda and vinegar you use would impact this. Ours was really more about yellow and blue make green. I think that the reaction of the baking soda and vinegar really did help the colors mix better. It was quite magical to see the blue go to green upon the addition of the yellow.
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