This activity will do well with an assistant or parent volunteer since you will be cutting open pumpkins and is best done outside.
You will need-1 to 4 pumpkins, measuring tape, scale, Pumpkin Exploration sheets, knife, and a place to complete and clean up the messy but fun activity.
Students will divide into 4 groups and each group will sit on the floor around a large pumpkin. There can be more or less groups depending on the size of the class. Students will have their Pumpkin Exploration sheets, clipboard or hard surface to write on, a pencil, and crayons if they choose. Using their Pumpkin Exploration sheets, students will first explore the outside of the pumpkin. They are welcome to lift the pumpkins, knock on them, sketch them on the back of their sheet, and feel the surface. They will then fill out the first two questions under "I Think." The teacher, assistant, or parent volunteer is valuable here so that students are not waiting for the adult to come and assist with the measuring and weighing of pumpkins. Students will then complete 2 questions under "I Found." Students will then complete their predictions on what they think the inside of the pumpkin will feel like and how many seeds are inside. The teacher and assisting adult will then cut open the pumpkin. Students will be allowed to feel the texture inside and scoop out seeds to be counted. After doing this, students can wash up to complete the last 2 sections under "I Found."
This lesson leaves you with many pumpkin seeds. Some can be planted but my students always enjoy when I wash them and roast them for sampling.