Unit Plan
Khan Academy

Khan Academy: Dilate Triangles

For Students 9th - 10th Standards
Given a figure and a definition of a dilation, draw the image. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Dilation in the Coordinate Plane

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] This concept teaches students how to draw dilated figures in the coordinate plane and use dilated figures in the coordinate plane to find scale factors. Students...
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...
Activity
Texas Instruments

Texas Instruments: Real Life, Real World Activity Architecture

For Teachers 9th - 10th
Architects and Interior Designers use scale drawings that represent the house or room they are designing. This activity uses Cabri Jr. Geometry software to create a scale drawing with dilations.