One of our homeschool science classes suggested coloring carnations. This helped to demonstrate how water travels upward through the stem of a plant. If you would like to try this experiment you will need the following items: glass or pint-sized jar, water, food coloring, scissors, a magnifying glass, and two or three white carnations. Fill the glass one-third full of water, and then add ten or fifteen drops of food coloring. With the scissors, trim the end of the stems before placing the flowers into the colored water. Leave the flowers in the water overnight. You will notice a change in the flowers the next day. We really enjoyed doing this experiment! It was very simple to complete!