I used this as a whole class group work. I asked students to get into a group of two. Each student was given handouts and asked to make a booklet of the rectangle families. the imposter did not belong to any rectangle family, so students were kind enough to draw two other rectangles (family members) for the imposter. Students drew in faces and hair and outfits for each of the rectangle families. This was a hit with my 7th grade math class. It took about 50 min. from start to finish. enjoy!
7.6d Use critical attributes to define similarity
• You will need Rectangles A-J, a recording sheet, a protractor, and a ruler.
• The set of rectangles includes 3 families plus 1 imposter. The members of a family are similar. The imposter is not in any family.
• Sort the rectangles into 3 families and identify the imposter.
• Use your measuring tools to find the ratios of your side lengths and the angle measure to verify that you sorted the rectangles correctly.
• Create 2 new rectangles that are similar to the imposter in order to form a 4th family.