This lab was designed to be used by 5th Graders with our Kindergarten Science Buddies But would work well as a lab with Grades PreK-4. I have specifically added graphics to the instructions to account for the reading ability of younger students. This has worked well in helping students set up, track, and make solid conclusions about a lab. I have done a lab similar to this with vinegar to look at eggshells, but It was fascinating for students to see what sugar did to an eggshell over time and ma