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Fourth Grade Videos (1,202 results)

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This fun video shows how to make a parachute for your bottle rocket. For detailed instructions, and to learn about the science behind this activity, click https://www.sciencebuddies.org/stem-activities/bottle-rocket-design?ytid=qfelBhJPQ1o&ytsrc=description To learn how to make and shoot bottle rockets, watch the video https://youtu.be/c4Iu_-jqegw or click https://www.sciencebuddies.org/stem-activities/bottle-rocket-design?ytid=qfelBhJPQ1o&ytsrc=description Science Buddies also hosts a…
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Have you ever wondered why the yummy pieces in your cereal cluster in one area or why your trail mix is never well mixed? Watch this video and find out why this happens! This is our third entry in the @veritasium Science Communication Contest. It was made by Dr. Sabine DeBrabandere, a Science Buddies' staff scientist. Science Buddies is a nonprofit organization dedicated to bringing the joy of hands-on STEM learning to students worldwide. Since 2001, Science Buddies has worked to make…
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This video shows you how to train a K-Nearest Neighbors (KNN) model to classify breast cancer tumors as malignant or benign using machine learning and libraries on Google Colab. Written instructions and example code are available on the Science Buddies website: https://www.sciencebuddies.org/science-fair-projects/project-ideas/ArtificialIntelligence_p010/artificial-intelligence/KNN-breast-cancer?ytid=w5Ie1u4KW3o&ytsrc=description A conceptual overview of the KNN algorithm:…
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An introductory video to "Swarming, swirling and stasis in sequestered bristle-bots", Proc. R. Soc. A 469, 20120637 (2013) by L. Giomi, N. Hawley-Weld and L. Mahadevan. All footage is camera footage (not animated).
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Do you know what kind of birds live in your neighborhood? Have you ever taken a closer look at what they look like and what they do all day long to survive? In this activity, you will build a bird feeder to attract birds, so you can study them. https://www.sciencebuddies.org/stem-activities/build-bird-feeder?ytid=_uruQS6EJyI&ytsrc=description Science Buddies also hosts a library of instructions for over 1,000 other hands-on science projects, lesson plans, and fun activities for K-12 parents,…
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Build a simple centrifuge from a plastic bottle to understand how centrifuges work. Follow the step-by-step directions in this video and explore what mixtures your centrifuge can separate.
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Have you ever seen dome-shaped climbing structures on the playground? They are geodesic domes! Can you build one from candy? This activity shows you how! Written instructions are available on our website at https://www.sciencebuddies.org/stem-activities/geodesic-domes-gumdrops?ytid=sjHCztFSxTw&ytsrc=description Science Buddies also hosts a library of instructions for over 1,000 other hands-on science projects, lesson plans, and fun activities for K-12 parents, students, and teachers! Visit us…
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No one, not even a very strong human, is strong enough to lift a truck. However, our brains are smart enough to create a tool that can lift heavy objects for us: hydraulic lifts! This video explains how to build a hydraulic lift yourself! Detailed written instructions and tips are available on our website at https://www.sciencebuddies.org/stem-activities/lift-a-load-using-liquids?ytid=ZS-JkEqVONQ&ytsrc=description Science Buddies also hosts a library of instructions for over 1,500 other…
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What is a differential? How does a differential work? What is a differential for? Find out the answers to all these questions as you build your own working model differential from K'Nex® in this fun STEM activity! Written instructions are available on the Science Buddies website: https://www.sciencebuddies.org/stem-activities/knex-differential?ytid=clkwb57rEfg&ytsrc=description Science Buddies also hosts a library of instructions for over 1,500 other hands-on science projects, lesson plans,…
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This video introduces the "Build a Light-Tracking Robot Critter" robotics engineering Project Idea at Science Buddies. Kit available here: https://www.homesciencetools.com/product/advanced-bristlebot-kit/?aff=SB1. You can view the full science project directions here: https://www.sciencebuddies.org/science-fair-projects/project_ideas/Robotics_p012.shtml?ytid=SoHNVHZ2fng&ytsrc=description In this project you will build your own biologically inspired robot critter that mimics this behavior.…
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Free science fair projects.