I love teaching fifth graders. They are not quite grown, yet they are not quite "little." It's exciting and fun. There are so many things you can do with fifth graders. One of which is adding a bit of excitement to science class by incorporating gardening into you lessons.
You can introduce the various aspects of seed germination and growth and experiment with it by planting your own seeds. You can even review with online science games.
Students will enjoy studying how the various plants like different types of soil, or amounts of water. Students can examine the roots systems, watch how the plants grow leaves, and then observe as the plants begin to blossom and fruit.
At harvest, students can study the correct times and ways to harvest the various plants, and then plan on how you would keep and store the harvest. A garden can provide your fifth graders with an outdoor science classroom!