Use this introduction to scale factor to help make the abstract more concrete for your students. I found that students who typically struggle during math class were engaged and voluntarily answered questions during this lesson.
The zip file includes:
*An editable PowerPoint lesson that briefly discusses where scale factor is used outside the classroom, examples of shape enlargements and reductions, and visible animated solutions for the students to see after attempting to enlarge and reduce the shapes on the worksheet.
*An editable word document that has intentional blank spaces so students can't work too far ahead without the PowerPoint lesson and so the teacher can check for understanding. The worksheet has a rectangle to enlarge and reduce and a couple irregular shapes to enlarge.
*An optional assignment where students create a word using grid letters and enlarges the word using a scale factor of 2.