This PowerPoint illustrates three different dilation problems with different variations. It satisfies the some requirements for common core 8.G.3. The first problem has two similar figures that share origin as an ordered pair. The second problem is to decrease by a factor of three. The third problem is harder because the center of dilation is not origin. The slide ends with same triangle repositioned with the center of dilation at origin. Many times dilation is taught by just increasing or decreasing coordinate values by a scale factor. This slide will add a rigor to the normal lesson. There is a summary, two exit questions and Socratic question slide. These can be used to review or to stretch learning. Socratic questioning is less about the “right” answer and more about the journey to the answer. Review the notes for each slide or edit them.
Note: My philosophy for slide shows. Long slide shows become very boring very quick. I use slide shows to model a concept. Because I teach the same lesson multiply times there are certain things I like to stress. If it is on a slide I don’t forget it. I like to use animations to hold the students attention. I normally will have a vocabulary slide for students to copy into their notebook. Hence the “white note taking icon” on the vocabulary slides. I generally will have two avatars in the bottom of the slide to guide the students through the slides. The avatars will ask questions to one another or corny jokes that students don’t understand. My students enjoy reading what is on the callouts of the avatars this allows for more interaction within the classroom. If you purchase this please adapt it to your classroom. Last slide as my e-mail address, if you find errors regardless how small please e-mail me and inform me so I can make corrections.