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Activity
Khan Academy

Khan Academy: Step 4 (2 D Spring Mass System)

For Students 9th - 10th
This program simulates a particle connected to an anchor by a damped spring in two dimensions. Try changing the initial settings.
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Activity
Other

Lincoln Public Schools: Applied Technology & Engineering: Mousetrap Car It's a Snap! [Pdf]

For Students 9th - 10th
This is an engineering activity that requires students to build a mousetrap car based on certain constraints. Constraints include students having a virtual budget that they use to buy approved parts for their car, the car having...
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Interactive
CK-12 Foundation

Ck 12: Plix Series: Metric Units

For Students 6th - 8th
[Free Registration/Login Required] Change the dimensions in this four-quadrant graph to explore metric scale. After the activity, answer a challenge question to check for understanding.
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Website
Independence Hall Association

U.s. History: New Dimensions in Everyday Life

For Students 5th - 8th
A brief overview of the changes brought about because of the United States becoming more urban. Read about the attention to social reforms, the introduction of professional sports, and the ability to take part in leisure activities.
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Lesson Plan
University of South Florida

Fcat: Two for One Box Company: Teacher Notes

For Teachers 9th - 10th
At this site students use proportions to explore how volume is effected by dimension changes. This hands-on activity can be done individually or in pairs.
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Activity
Texas Instruments

Texas Instruments: Math Today Wing Tabs Save Fuel

For Teachers 9th - 10th
Using the USA TODAY Infograph, 'Wing tabs save fuel', ratios and proportions will be used to explore the concept of similarity between a drawing/model and the actual dimensions. The effects of dilation (size change) on an image and...