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Dilation Teacher Resources
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In this geometry lesson, students collect and analyze data as they investigate relationships between the pre-image and the image of a triangle. They investigate angle measures, side lengths, and the dilation factor. The dynamic nature of Cabri Jr. allows students to form and verify conjectures regarding dilations.
Young scholars explore the concept of transformations. In this transformations lesson, students enter data into lists and make a scatter plot of points. Young scholars use lists to transform the data points by shifting the points, left and right, or up and down. Students also enlarge and shrink the data points.
Using a data collection device to collect data regarding a bouncing ball, students use various features on graphing calculators to experiment with the parameters of the vertex form of the parabola and their effect on the shape of the curve. They use this concept to find a quadratic model. They also use translation and dilation to change the general parabola.
Apply geometric properties and formulae for surface area and volume by constructing a three-dimensional model of a city. Learners use similar and congruent figures and transformations to create a city of at least 10 buildings. They trade with classmates, who calculate surface area and volume of some of the structures. Refers to a Discovery Education video/DVD to support and enrich the project; a link takes you to a website to order it. Charts mentioned are not attached.
Students perform transformation and rotations on different polygons. In this geometry lesson, students continue their research in global warming as they discuss rotation and transformation of axis of the globe. They apply properties of geometry to solve cross curricular questions.