This worksheet is designed to replace a lecture on the topic of using similarity for geometric figures. It includes the concept of similarity itself, "stacked" triangles (two similar triangles that share one vertex), the concept that angles do not change, and work to cement the fact that you will distort a shape if you simply add or subtract the same amount from all sides of a shape.
I start out class with a 15-minute "mini-lesson," giving my students some basic examples of what today's lesson will be about. Once the mini-lesson is over, I have them get to work within their groups on this worksheet.
I use this activity within cooperative groups, and I circulate to make sure they are getting the purpose of the questions.
The file includes spiral review problems.
This worksheet is intended to be written on directly.
Please download the pdf preview file first, so you can see exactly what's included; the product file is a word document, which you may personalize for your students.
Immediately before this worksheet, I use the mini lesson named 'Using Similarity Spring 2014 Notes' (http://www.teacherspayteachers.com/Product/Using-Similarity-Spring-2014-Notes-1266689
), and immediately after this worksheet, I use the assessment named 'Geometry Quiz Similarity Radicals and Proportions Spring 2014' (http://www.teacherspayteachers.com/Product/Geometry-Quiz-Similarity-Radicals-and-Proportions-Spring-2014-2-versions1-page-1266742