Third Grade Science Experiments (Page 199)

She Shoots, She Scores! How Does Hockey Stick Flex Affect Accuracy and Speed?

Science Fair Project Idea

Scientific Method

While watching an ice hockey game, have you ever wondered what differentiates a good player from a great player? For sure, the great player is athletically superior to the good player. But maybe it is a combination of athleticism and equipment. Maybe a great player knows which hockey stick is best for him or her. Hockey players can choose to play with hockey sticks with different flexibilities or "flex." In this science fair project, investigate how stick flex affects shot accuracy and speed.… Read more

Shoots: How do Mint Plants Branch to Form New Stems?

Science Fair Project Idea

Scientific Method

Do you like to climb trees? The branches of trees are what make them so fun to climb. Each branch starts out as a tiny shoot that grows out from a stem. How is the growth of shoots along a stem regulated? Read more

Should My Robot be More or Less Squishy?

Science Fair Project Idea

Scientific Method

In our introductory VoxCAD project, we provided a template with four materials: two active materials that expand and contract in the physics sandbox mode, and two passive materials — one hard and one soft. The project mentioned material properties, but it did not go into much detail — you just used the default settings from the template. Changing the material properties can drastically change how your robots behave. Engineers must take material properties into account when designing… Read more

Should We Walk Like Penguins? How Age Affects Your Stride

Science Fair Project Idea

Scientific Method

Watch out for that ice! When winter weather makes sidewalks icy, many people slip and fall. One tip doctors give is to walk like a penguin. That means pointing your feet slightly outward, keeping your center of gravity over your feet, and taking short, careful steps. Research has shown that these changes in stride and posture help people stay stable and avoid falls. These tips are especially helpful for older adults, who are more at risk of falling due to a decline in their balance as they… Read more

Showing the Airflow in a Wind Tunnel

Science Fair Project Idea

Scientific Method

A technique often used in wind tunnels is to introduce smoke in front of the airfoil that is being tested. The smoke comes from regularly-spaced point sources, and the wind flow in the tunnel spreads it out into parallel lines, called streamlines. The streamlines make it possible to visualize the airflow over the airfoil. When the lines continue smoothly over and past the airflow, they show that the flow remains laminar, and that the airfoil is creating very little drag. When the… Read more

Silt Deposits in Streams

Science Fair Project Idea

Scientific Method

Silt is a fine sediment that collects on the bottoms of rivers, streams and lakes. The natural process of the decay of organisms into the water can lead to the production of silt at the bottom of a lake. Silt can be a rich source of nutrients for fish and bottom dwellers like crayfish. However, it can also be introduced by unnatural processes. One problem for rivers, lakes and streams is the buildup of excess fine sediment introduced by industry. Because it often contains harmful chemicals it… Read more

Simple Machines and Potato Holes

Blog Post

In this family STEM activity, kids are challenged to find the easiest way to drill holes in a raw potato. There is a "simple machine" key to this challenge! Simple Machine Power A raw potato can be pretty firm, and trying to punch or drill holes into it can be more difficult than you might expect. Science, however, holds the key to making it easy! In this week's family-friendly science activity, students experiment with pencils and straws to find the… Read more

Simple Science Activities with Cardboard Tubes

Blog Post

Beat Spring Fever in science class with fun hands-on science activities that use cardboard tubes. These activities are simple to plan but offer creative learning opportunities for all ages! Five STEM Activities with Cardboard Tubes: Science Activities at Science Buddies. www.sciencebuddies.org/stem-activities Testing schedules and the approach of the end of the school year can make it hard to keep students engaged. Hands-on activities that reinforce… Read more

Simplified STEM Activities Help Fill Gap for Online, Remote, Hybrid Learning

Blog Post

Science Buddies has more than 200 free science and engineering activities teachers can use in preparing for classroom, remote, hybrid, or pod learning. This activity with balloons is one of 200+ activities available at Science Buddies that can be used for classroom, remote, hybrid, and pod learning - or in afterschool and out-of-school programs Science Buddies has more than 200 free science activities that offer fun, easy-to-follow, informal STEM… Read more

Simulate Microchip Clean Room Contamination with Crayon Leaf Rubbings

Science Fair Project Idea

Scientific Method

Have you ever made a leaf rubbing or imprint using paper and crayons? What do you think would happen if you got dirt or sand on the leaf? Would it mess up the result? In this project you will find out and learn about how this is related to the process of making the microchips that run our phones, computers, and other electronic devices. Check out this page for more science projects related to this process. Read more

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