This Instructional Activity is a part of the Lesson 9, Unit 4, Grade 7. Consider having some groups solve the problem using a visual model and other groups using an equation. Have students explain their models to other groups and look for comparisons for problem solving. For the exercises, possibly select specific individuals to solve problems using an assigned method to allow students to get comfortable with choosing and utilizing problem-solving methods of choice and efficiency. The previous example presented a visual model approach. In this example, allow students to choose their preferred method to solve the problem.