Whether you have your class plant seeds or begin when sprouts are visible, math skills are used here to predict and track growth over time. Straw bar graphs show plant height on a given day while the graph as a whole shows changes over time. This detailed lesson comes with variations, books about plant growth, and everyday connections. Budding botanist’s can record observations, reflections, sketches, and photos in a scrapbook/ journal to keep as a reminder of this activity.