This is an activity/worksheet my students seem to enjoy: in the process of learning about CPCTC (Corresponding Parts of Congruent Triangles are Congruent), they create two copies of a shape, and then take apart parts of the shape to see that the corresponding parts are actually congruent.
Make sure you have scratch paper and scissors available.
The biggest tradeoff with this assignment is that some students get very creative and artistic with the shape during class, so not all of them got to the "meat" of the assignment during class. But it was nevertheless a memorable lesson and they enjoyed it.
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.