Candy cane science experiment: a 30-minute dissolving test for K–2

1. Look closely. Pass around a wrapped candy cane. Ask: "What do you notice? What do you think it's made of?" (Mostly sugar, plus color and flavor.)
2. Show the three cups. Students touch the outside of each one and name them: cold, room, warm.
3. Predict. "Which cup will make the candy cane disappear fastest?" Students vote by holding up 1, 2 or 3 fingers. Record the votes as tally marks.
4. Make it fair. Ask: "What has to be the same in every cup?" Guide students to the same amount of water, the same size candy cane and dropping them in at the same time. Measure the same amount of water into each cup together.
5. Drop and watch. Three helpers drop the candy canes in on "go". Check at 1, 5, 10 and 15 minutes. Students describe each cup: "The red is spreading." "It's getting skinny."
6. Results. Which cup dissolved the candy fastest? Compare with the votes. Explain simply: the tiny bits that make up warm water move faster, so they pull the sugar apart faster.

While you wait: count the stripes on a spare candy cane, or sort a handful of candy canes by color pattern.

Differentiation: for kindergartners, compare just two cups, cold and warm, using the words fast and slow. For 2nd graders, students draw each cup at every check and write one sentence about what they found. For English learners, label the cups with a snowflake, a house and a sun, and pair the word dissolve with a hand motion. For students with sensory needs, let them observe from a seat close by and skip touching the cups if wet or cold hands are hard.

Quick check: hold up a sugar cube and ask: "I want this to dissolve fast. Which cup should I use?" Students point to the right cup.

If you try it, tell us how many minutes the warm cup took in your room.