Doing a pumpkin investigation is one of the best ways to keep your students engaged and learning around Halloween time. Which, did I mention, is my LEAST favorite holiday? I'm not one for masks, scary costumes or spooky noises. My students love it, though, so I embrace it.
The pumpkin investigation brings in math and science while keeping students actively learning and working together. This product has over 20 pages you can choose from to create your own pumpkin investigation mini-book. I usually take 3 days to complete this, but you could take more or less time depending on how many activities you want to do.
To start your investigation, you need to get pumpkins for your class. I recommend having enough pumpkins to create groups of 4-5. I bought a couple and then I had parents donate pumpkins to our class. Each group had their pumpkin that they worked with for the couple days we did our investigating.
Estimating and DescribingThe first thing you're going to want to do is complete all of the estimating for your pumpkin. A lot of the pages involve measuring or counting and they include a spot for estimating. I know my firsties are currently working on estimating, and they still definitely need help making appropriate guesses. Here's a great time to practice. You will want to estimate the number of ribs, how many cubes tall it is, how much it weighs, how many seeds, etc. I usually do this on the first day of our investigation.
Also on the first day, I have the students describe the size of the pumpkin and we brainstorm words that describe the outside of the pumpkin.
Before we start our pumpkin investigation I also start reading some of my favorite pumpkin books and we start talking about the life cycle of the pumpkin.
Here are some of my favorite books for teaching the pumpkin life cycle.
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Measuring and CleaningThe next day, we spend most of the time actually measuring our pumpkin. We use a tape measure, unifix cubes, string, scale and any other tool you need for the pages you choose.
Here the students are working to count the number of ribs on their pumpkin.We also clean out the pumpkin on this day. I cut a hole in the top and pull the stem out, and then I let them go at it cleaning it out. Some kids are all about it and will dig right in, others won't even touch the pulp. It's interesting to see who likes it and who doesn't. You can also tell who has carved pumpkins at home and who hasn't.
I have each group put their seeds in a bowl or on a plate and we work to separate the seeds from the pulp. I keep each group separate so that when we go to count the seeds tomorrow, they have the right set of seeds from their pumpkin.
Carving and CountingThe final day, which I like to do on Halloween in their costumes, includes all things carving and counting. I have parents come in and work with the groups to help them carve. They have to decide as a group what they want their pumpkin to look like and I have them draw out what it should look like. The parents then do most of the carving after the kids have drawn the design.
Here, a student does her idea for the pumpkin carving.
The afters. We had some pretty good looking pumpkins!
After the pumpkins are carved, the kids start counting. It's interesting to see their methods for counting the seeds. Some groups know to group, others will need support in figuring that out.
Tasting and GraphingOn another day, after carving and counting, I take some time to roast the pumpkin seeds and we taste the seeds. Some kids have had them, others have not. Some kids love them, others do not. Some kids won't even try them.
The very last activity I do is graph the taste test, whether the kids like the roasted seeds or not. One of the page options is for making pumpkin pie if that's more your jam. I can typically only handle roasting the seeds, but do whatever works for you and your class.
Top Tips!Here are some of my tops tips to help make this go smoothly:
- Buy the pumpkins or have parents donate the pumpkins. If a parent donates a pumpkin, that kid gets to take it home.
- Buy plastic tablecloths from the dollar store. They were a lot easier to use than newspapers and I didn't have to collect enough newspapers for 4 groups of kids. I covered the tables every day we used the pumpkins. I was able to cut the large rectangle banquet table clothes in halves to fit my tables.
- If you're having a hard time separating the seeds from the pulp, put the seeds in a bowl of water. The seeds tend to float and the pulp sinks. It's also easier to rub the seeds with your hands in the water and get the pulp off of the seeds.
- Buy or have parents who come in to carve donate or bring their own carving supplies. Be careful about kids bringing in carving knives. I bought cheap knives from the Dollar Store just to have for this purpose and I can reuse them year after year.
- When making the book, print any of the pages you want and copy front to back. Then cut in half and staple into a book.
- I typically raffle off the pumpkins I buy to see who gets to take the pumpkin home. Some kids definitely get upset, but it's a lesson in choosing fairly and not always getting your way.
- Try this with mini-pumpkins. Being 9 months pregnant this year around Halloween, I'm not quite sure I'm up for the whole thing. BUT, I thought it would be fun to still do this where everyone gets their own little mini-pumpkin. You could still do all of the measuring and such and then you could paint the pumpkins or decorate with sharpies.
I hope you have as much fun with this as we do. The kids love it and there is so much learning that happens between math and science, but also cooperation.
If you do this or have done it, let me know in the comments below. I'd love to hear about it!
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