Fresh celery stalks
- Fill the glass of water about 1/2 full with water. Add 8 to 10 drops of food coloring to the water. Although you can use any color, the darker colors will show better. Mix carefully with a spoon.
- Trim the ends off several stalks of celery at a slight angle. Leave the leafy ends on the celery. Put the trimmed celery into the glass of colored water. Set out of the way in a safe place.
- Check the celery hourly. The celery will begin showing colored streaks running up the stalk.
- Ask your children what they think have happened. Point out the little red marks on the leaves. Take the celery out of the glass. On a cutting board, use a knife and cut across the celery stalk. Notice that the strings of the celery are colored and the outer edge of the stalk has little colored dots.
- Explain that the water is absorbed or sucked up by a plant. It travels up the stalk and then into the leaves.
* Another good example to use is white carnations.