Watch a show on television about the forest or rainforests. Look at a listing of T.V. shows, like TV Guide, and find a show you think you might like. Pay close attention to the parts of the show that talk about the greenhouse effect and deforestation. Look at the trees that grow where you live and find out what their seeds look like. Oak trees make acorns.
Pine trees make pine cones.
Plant a seed and watch it grow. When the tree is big enough, plant it outdoors where it can grow into a big tree. Share your seed and tree with the class. Ask a parent to take you to the park where many trees grow. Notice the many different plants, seedlings, and trees.