Putting Math to Work

Type of Unit: Problem Solving

Prior Knowledge

Students should be able to:

Solve problems with rational numbers using all four operations.

Write ratios and rates.

Use a rate table to solve problems.

Write and solve proportions.

Use multiple representations (e.g., tables, graphs, and equations) to display data.

Identify the variables in a problem situation (i.e., dependent and independent variables).

Write formulas to show the relationship between two variables, and use these formulas to solve for a problem situation.

Draw and interpret graphs that show the relationship between two variables.

Describe graphs that show proportional relationships, and use these graphs to make predictions.

Interpret word problems, and organize information.

Graph in all quadrants of the coordinate plane.

Lesson Flow

As a class, students use problem-solving steps to work through a problem about lightning. In the next lesson, they use the same problem-solving steps to solve a similar problem about lightning. The lightning problems use both rational numbers and rates. Students then choose a topic for a math project. Next, they solve two problems about gummy bears using the problem-solving steps. They then have 3 days of Gallery problems to test their problem-solving skills solo or with a partner. Encourage students to work on at least one problem individually so they can better prepare for a testing situation. The unit ends with project presentations and a short unit test.