Students measure, record, and graph plant growth and interpret data. Students plant seeds and, once the seeds sprout, record the height of the plants for several days. In groups or individually, they make graphs to display the data and then predict how the future growth may appear on the graph. Students continue to gather data, complete, and interpret the graphs. Then students work in small groups to write an appropriate story about the life cycle of a plant that corresponds to a graph they are given. This lesson was adapted from Changes Over Time, a unit of Investigations in Number, Data, and Space. In addition to the lesson plan, the site includes ideas for teacher discussion, extensions of the lesson, technology connections, related research findings, additional resources, and a discussion of mathematical content. The lesson plan is accompanied by video clips illustrating lesson procedures. The user should first locate the Tree-mendous Plots lesson and then access the appropriate video clips. (author/pk)