PBS
Invisible Force
Investigate invisible forces. Young engineers design a setup that changes the direction of a steel ball using a magnetic force. The purpose of the setup is to model the gravitational pull of spacecraft by planetary bodies.
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Eratosthenes And Radius of the Earth
Students calculate the radius of the earth. They use the method and data suggested by Eratosthenes. They investigate the interrelationships among mass, distance, force, and time through experimental processes.
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Geometry of Exploration: Eyes Over Mars
Learners research how engineers and scientists generate linear and angular measurements with geometry to survey the Earth and Mars. They assess how geometric shapes affect navigation. A surveyor comes to the classroom and explains how he...
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Vectors: How Much Force Can You Apply
This activity entails the viewing of two videos to get an overview of force and its application. The activity covers how vectors use force in real-world situations.
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Lesson 4 Activity 1: Mapping the Third Dimension
Students work in pairs to construct a simple stereoscope.
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The Impact
Students investigate the impact inventions have on people. In this technology lesson, students explore inventions, such as the light bulb, and identify ways the invention impacted society. Students design a simple project that could...
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Aqua-Thrusters!
Students construct their own rocket-powered boat called an "aqua-thruster." These aqua-thrusters will be made from a film canister and will use carbon dioxide gas - produced from a chemical reaction between an antacid tablet and water -...
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What a Drag
Middle schoolers learn examples of friction and drag, and suggest ways to reduce the impact of these forces. The equation that governs common frictional forces is introduced, and during a hands-on activity, students experimentally...
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Intellectual History
In this online interactive world history instructional activity, high schoolers answer 22 matching questions regarding the Enlightenment. Students may submit their answers to be scored.
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Air and Water Pressure
Students examine buoyancy and fluid pressure. They conduct a series of fun experiments to discover the effects of pressure and explore how pressure differences can be used to float, lift, transport, or hold a material in place.
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Electric Field Mapping in 3D
Students create a 3D vector field map of an electric field. For this physics lesson, students measure the voltage inside an aquarium with water. They present their findings and map to class..
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Ballistic Pendulum Lab
Young scholars determine the muzzle velocity of projectile launcher. For this physics lesson, students compare the pendulum method and kinematic method in calculating the initial velocity. They analyze data and discuss results in class.
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Olympic Training Center
Students decide on an activity like running, swimming or skating for a performance analysis. They have friends or family members videotape them as they exercise, then review the video to see how they can improve their performance.