I use Dina Zikes Foldables in my classroom. We create them using notebook paper or construction paper. After each chapter we look back and include key concepts and examples in each part of our Multi-Part Lesson Foldable booklets. Basically, it helps students organize their notes. They refer to their Foldables while completing the Study Guide and Review and the night before a test. On this day, we created Foldables to review Functions and Inequalities.