This time instead of giving him four different cups of colored vinegar I gave him one cup of vinegar and baking soda with color underneath. The food coloring did bleed through a little but no worries. Also, I had him use scoopers this time. 1/4 tsp and 1/2 teaspoon. It was way better for him than the dropper.
Just getting started.
Starting to see some color now.
More colors are starting to appear.
Then he got to swirling the spoons in the baking soda and when he dipped them back in the vinegar they fizzed like crazy.
Two handed action.
Filled with color.
Alright mom, I'm done.