Students make a wheel and axle out of cardboard and a wooden …
Students make a wheel and axle out of cardboard and a wooden dowel. It is rooled along a ramp made of parallel meter sticks, and the acceleration can be made small enough to make accurate measurements and calculations.
Video tutorial explains how to read an acceleration vs. time graph and …
Video tutorial explains how to read an acceleration vs. time graph and shows how the area under the curve gives the change in velocity, while providing a few examples. [14:37]
Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.
Students work as physicists to understand centripetal acceleration concepts. They also learn …
Students work as physicists to understand centripetal acceleration concepts. They also learn about a good robot design and the accelerometer sensor. They also learn about the relationship between centripetal acceleration and centripetal force governed by the radius between the motor and accelerometer and the amount of mass at the end of the robot's arm. Students graph and analyze data collected from an accelerometer, and learn to design robots with proper weight distribution across the robot for their robotic arms. Upon using a data logging program, they view their own data collected during the activity. By activity end , students understand how a change in radius or mass can affect the data obtained from the accelerometer through the plots generated from the data logging program. More specifically, students learn about the accuracy and precision of the accelerometer measurements from numerous trials.
This segment from Swift: Eyes through Time traces the observations of military …
This segment from Swift: Eyes through Time traces the observations of military officers and engineers as they discovered strange phenomena in the sky that astronomers now know are gamma-ray bursts. [3:39]
This segment from Swift: Eyes through Time traces the history military officers …
This segment from Swift: Eyes through Time traces the history military officers and engineers discovering a strange phenomenon in the sky that astronomers now know are gamma-ray bursts.
In this lab exercise, students practice correctly using measurement tools, recording data, …
In this lab exercise, students practice correctly using measurement tools, recording data, calculating density, using significant figures, and exploring the concepts of accuracy and precision.
Students answer the question of how does climate change affect ocean ecology? …
Students answer the question of how does climate change affect ocean ecology? Students explore a wide ranging effects of climate change through this online lab simulation. Lesson plan includes teacher notes, activity worksheets, and discussion questions.
In this activity, students explore the effect of chemical erosion on statues …
In this activity, students explore the effect of chemical erosion on statues and monuments. They use chalk to see what happens when limestone is placed in liquids with different pH values. They also learn several things that engineers are doing to reduce the effects of acid rain.
Students conduct a simple experiment to model and explore the harmful effects …
Students conduct a simple experiment to model and explore the harmful effects of acid rain (vinegar) on living (green leaf and eggshell) and non-living (paper clip) objects.
Students are introduced to the differences between acids and bases and how …
Students are introduced to the differences between acids and bases and how to use indicators, such as pH paper and red cabbage juice, to distinguish between them.
Acids and bases are substances that are able to give and receive …
Acids and bases are substances that are able to give and receive hydrogen ions respectively. This seemingly insignificant ability gives rise to a wide range of reactions and is essential for many biological processes. This pathway provides resources related to acids and bases, the types of reactions they undergo, and the pH scale which is used to measure the concentration of hydrogen ions in a solution.
ZOOM cast members mix different amounts of baking soda and vinegar to …
ZOOM cast members mix different amounts of baking soda and vinegar to see which combination produces the most carbon dioxide for launching a film-canister rocket. [3:23]
In this video segment adapted from ZOOM, two cast members demonstrate what …
In this video segment adapted from ZOOM, two cast members demonstrate what happens when vinegar is added to baking soda inside a container. The resulting chemical reaction produces enough carbon dioxide to launch their paper rocket skyward. Recommended for: Grades K-5
In this ZOOM video segment, cast members make bottle rocket cars using …
In this ZOOM video segment, cast members make bottle rocket cars using lemon juice and baking soda, and experiment with different ways of launching the cars. [4:46]
A car propelled by the reaction between lemon juice and baking soda …
A car propelled by the reaction between lemon juice and baking soda has more in common with rockets and jet aircraft than one might think. In this video segment adapted from ZOOM, two cast members demonstrate the power of rocket-propelled vehicles and how to exploit the force produced by the carbon dioxide gas. Grades 3-8.
It would seem that bottles of lemon juice and rockets have only …
It would seem that bottles of lemon juice and rockets have only their basic shape in common. However, as two cast members from ZOOM demonstrate in this adapted video segment, when baking soda is added to the mix, a plastic bottle can act very much like a real rocket. Grades 3-8.
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