Hi there. If you’re using a straw, you would plug the top end with your thumb and slowly let the liquid run out of it down the side of the inside of the jar. Same for the dropper. You don’t want to just “drop” the liquid in as it will then mix and you won’t get the density layers. You will just end up with a purple, brown mix. It may work for some of your twos and threes, but it may just be too much for some of them. Maybe an alternative is they watch you do it and then they could play with their own droppers in other colored water and make art on paper.

I was wondering about the straw and exactly how that would work. With the droppers, did you have to add the drops really slowly and one at a time? Or could you just squeeze it? Asking, because I want to try this with my two and threes. Some will be able to listen and add slowly l, but some may want to squeeze as hard as they can

My guess would be no since brown sugar contains molasses and would be a different density. But it is a science experiment, so it wouldn’t hurt to try it and see what would happen.

Would brown sugar work just as well?

Hi there. If you didn’t get layers, the sugar measurements may have been off. Also, the layers/colors need to be added VERY slowly otherwise it will all just become mixed. I hope that helps!

I’ve never used gel food coloring, but if you can get it to mix with the water it would work just fine. Basically, you are just coloring the water in order to be able to see the layers.