Attn: you will need 3 forms of mealworms (adult, pupa, and larva). You can purchase mealworms from almost any pet store and let them go through the stages by feeding them cornmeal and some apple slices. You will also need to alter the textbook pages to fit your textbook, or use the internet.
Many students don't know that beetles go through compete metamorphosis, just like butterflies. Students are often surprised and engaged in this lesson.