technology and learning connections, a part of Florida's multi-tiered system of supports.

Applications of Ratio and Proportion in Similar Figures

Online

ExploreLearning: Perimeters and Areas of Similar Figures

http://www.explorelearning.com/index.cfm?method=cResource.dspView&ResourceID=189
This is a great gizmo for comparing two similar objects. You can change the shape of Figure 1 and rotate Figure 2. Use the slider to adjust the similarity ratio, making Figure 2 either larger or smaller. Checkboxes are also available to display the Area or Perimeter.

ExploreLearning: Similar Figures - Activity A

http://www.explorelearning.com/index.cfm?method=cResource.dspView&ResourceID=271
This gizmo allows the user to explore 6 different shapes, and explore their similarity to another object of the same shape. Sliders are available to rotate and scale the object. Toggling options are available to choose whether to show the lengths of the sides or the measure of the angles of different parts of the object.

Offline/Local: N/A