Mathematical reasoning is the key to solving problems and making sense of math. Throughout the program you'll learn strategies to develop mathematical reasoning habits.
The worked-out problems include call-outs that reveal the strategies and reasoning behind the solution. Look for the boxes labeled Plan and Think.
The Think-Write problems model the thinking behind each step of a solution.
Other worked-out problems model a problem-solving plan that includes the steps of stating what you Know, identifying what you Need, and developing a Plan.