Plan your lesson. Gather research and reading materials from the bookstore, library or Internet. Think about where you can encounter plants in your area (backyard, park, nursery, botanical garden). Gather craft materials.
Divide lessons by plant division, seedless plants and seed plants. Teach subject matter such as plant reproduction (gymnosperm and angiosperm reproduction) and the parts of plants (leaves: epidermis, cuticle, stomata, cells; stems; and root system) in lesser to greater depth according to the age of the children.
Introduce botany in a manner that immediately grabs the children's attention, tailoring to the children's age and interest level. Start with coloring sheets of the plant for young children. Allow older children to paint or draw freehand. Clay sculpting or crafting is good for students of any age. Begin your subject matter discussion while the children work on their crafts.
Read a short story. Choose books according to the age and attention span of the learners. Living books, or a book that tells a story, are recommended over textbooks. Stories capture attention and are more readily embedded into memory than a list of facts from a textbook.
Encounter plants to observe from the backyard, a garden club, nursery, book or Internet. Allow the children to hold the plants and describe them with all of their senses. How do the plants look, feel, taste (if edible) and smell? Discuss the uses of the plant: medicinal, pollination, oxygenation, edible or ornamental. Put the plant to use if possible. Taste herbs or place ornamental cut flowers in a vase to be enjoyed.
Create a nature journal. Children will draw pictures of what they observed. According to the skill level of the children, they can write the name of the plant, label it and write a short paragraph describing the plant.
Ask critical thinking questions to the child (ex: How does this plant reproduce?). Allow the child to "teach" you what they have just learned.