Recognize that plants use energy from the Sun, air, and water to make their own food Videos will add some spice to your lesson! The Magic School Bus, Gets Planted is a wonderful way to discuss photosynthesis with your students!
Back to school idea - "We're looking back on summer, this is what we see!" Have students draw pictures of things they have done over summer break in sunglasses. You could also do it for things students are looking forward to this year.