Learning goals: Teacher Facing Create a dilation of a figure given a scale factor and center of dilation. Explain (orally) the effect of the scale factor on the size of the image of a polygon and its distance from the center of dilation. Identify the center, scale factor, and image of a dilation without a circular grid. Full lesson plan (warm-up, activities, synthesis, cool-down prompt) from 8.2 Dilations, Similarity, and Introducing Slope, Grade 8.