Pumpkin Investigation Worksheets K-2 | Fall Science & Measurement Activities

🎃 Turn a real pumpkin into a hands-on fall science investigation for K–2! This Pumpkin Investigation resource guides young scientists through an engaging sequence of observing, predicting, measuring, testing, counting, comparing, recording evidence, and drawing conclusions using a real pumpkin. Students investigate the outside and inside parts of a pumpkin, five-senses observations, height and circumference, pumpkin ribs, sink or float, pumpkin seeds, pumpkin life cycle, and outside-vs.-inside characteristics before bringing their findings together on a final investigation conclusion page. The included Teacher Guide lays out the investigation sequence and materials while emphasizing observation of an actual pumpkin. Pumpkin Investigation Workshee Perfect for October science, pumpkin units, fall science centers, STEM activities, kindergarten science, first grade science, second grade science, measurement practice, whole-group investigations, and homeschool learning. 🎃 WHAT'S INCLUDED1. My Pumpkin First Look Students begin like scientists by observing the pumpkin before touching or cutting it. They draw their pumpkin and record its: Color • Shape • Size • Stem • Noticeable details They also write their first question about the pumpkin, adding an inquiry component to the investigation. Pumpkin Investigation Workshee 2. Parts on the Outside of a Pumpkin Students use a word bank to label: stem • skin • rib • blossom end They then complete four statements describing the function or location of each outside part. Pumpkin Investigation Workshee 3. Explore With Your Senses Students safely investigate the pumpkin using sight, touch, and smell. They record: I SEE: color, shape, another detail I FEEL: smooth, bumpy, hard, soft + another texture word I SMELL: description of the outside The page finishes with space for descriptive vocabulary. It specifically reminds students not to taste the pumpkin during the investigation. Pumpkin Investigation Workshee 4. Measure My Pumpkin Students predict first and then measure, which makes this more than a simple measurement worksheet. They investigate: Height — prediction vs. actual measurement Circumference — prediction vs. actual measurement Weight — optional prediction vs. actual result Height and circumference can be recorded in centimeters or inches. Students then identify their closest prediction and explain a measurement that surprised them. Pumpkin Investigation Workshee 5. How Many Ribs? Students predict the number of pumpkin ribs and then carefully count them. A comparison table allows the class to record results for: Mine • Pumpkin 2 • Pumpkin 3 • Pumpkin 4 Students then determine which pumpkin had the most ribs and whether every pumpkin had the same number. Pumpkin Investigation Workshee 6. Will My Pumpkin Sink or Float? Students make a prediction: SINK or FLOAT and explain why before performing the experiment. The page walks students through placing the pumpkin in water, observing what happens, recording SANK or FLOATED, checking whether their prediction was correct, and writing the evidence they observed. Pumpkin Investigation Workshee This is especially useful for introducing the idea that scientific results are based on evidence, not whether a prediction was correct. 7. How Many Seeds? Students first estimate the number of seeds inside their pumpkin. After an adult opens the pumpkin, students describe the amount as: a few • some • many They then organize counted seeds into groups of 10 + extra seeds, record the total using tens and ones, compare the estimate with the actual count, and calculate the difference. Pumpkin Investigation Workshee This page integrates science + place value + counting + estimation + subtraction. 8. Inside a Pumpkin After the pumpkin is opened, students label: skin • flesh • pulp • seeds They also record the inside color, texture, and one surprising observation. Pumpkin Investigation Workshee 9. Pumpkin Life Cycle Students number six pumpkin life-cycle stages from first to last and draw arrows to show the cycle: Seed → Sprout → Vine → Flower → Green Pumpkin → Ripe Pumpkin The page also explains that the cycle begins again when a ripe pumpkin has seeds. Pumpkin Investigation Workshee 10. Outside & Inside My Pumpkin Students compare observations made before and after opening the pumpkin. The comparison chart covers: Color • Texture • Parts I can see • Smell • One detail Students then explain one similarity and one difference between the outside and inside and draw a tiny observed detail. Pumpkin Investigation Workshee 11. My Pumpkin Investigation Conclusion The final page pulls the entire investigation together. Students summarize: Pumpkin color Height Circumference Number of ribs Sink-or-float prediction Actual sink-or-float result Estimated seeds Actual seed count Most surprising discovery The activity ends with a “Scientist's Claim” where students complete: “I learned that pumpkins…” Pumpkin Investigation Workshee 🔬 SCIENCE SKILLS COVERED • Observation • Prediction • Asking questions • Using senses safely • Measurement • Estimation • Testing a prediction • Recording results • Gathering evidence • Comparing observations • Plant anatomy • Pumpkin life cycle • Drawing conclusions • Communicating findings The Teacher Guide specifically states that students observe, predict, measure, test, count, compare, and communicate findings using one real pumpkin. Pumpkin Investigation Workshee ➕ MATH CONNECTIONS This resource also integrates meaningful early math: • Measuring height • Measuring circumference • Optional weight measurement • Counting ribs • Estimating quantities • Counting seeds • Grouping seeds by tens • Tens and ones • Finding a difference • Comparing pumpkins • Recording numerical data That science/math combination is an important selling point for the TGM listing. 🧪 MATERIALS The included Teacher Guide recommends: 1 real pumpkin per group or class • pencils • crayons • ruler • nonstretch string or flexible measuring tape • optional balance/classroom scale • large tub/container of water • towel • adult-safe cutting tools for teacher use only. Pumpkin Investigation Workshee 🏫 PERFECT FOR • Kindergarten Pumpkin Unit • 1st Grade Pumpkin Science • 2nd Grade Pumpkin Science • Fall Science • October Science • Pumpkin Investigation • Pumpkin Science Experiment • Fall STEM • Science Centers • Measurement Activities • Whole Group Science • Small Group Science • Pumpkin Day • Halloween Classroom Activities • Fall Observation Activities • Homeschool Science 🧑‍🏫 TEACHER SUPPORT INCLUDED The Teacher Support & Answer Guide provides labeled diagrams for the outside and inside pumpkin parts, guidance for open-ended sensory observations and measurements, sink-or-float recording guidance, and the correct six-stage life-cycle sequence. Pumpkin Investigation Workshee Importantly, it notes that measurements, rib counts, seed counts, descriptions, comparisons, and conclusions will vary because students are collecting real investigation data. That makes the resource authentically hands-on rather than forcing artificial fixed answers. ⚠️ SAFETY SUPPORT The Teacher Guide includes clear safety expectations: • An adult cuts the pumpkin • Students do not handle knives or sharp tools • Spilled water should be wiped promptly • Students should not taste the pumpkin unless the teacher has planned a separate food-safe activity Pumpkin Investigation Workshee ❤️ STRONG SELLING POINT The biggest advantage of this resource is that the worksheets form one connected investigation rather than unrelated pumpkin printables: First Look → Outside Parts → Senses → Measurement → Ribs → Sink or Float → Seeds → Inside Parts → Life Cycle → Compare → Conclusion That sequence is explicitly reflected in the Teacher Guide. Pumpkin Investigation Workshee