To help students apply the math in this chapter to real-life applications, we've included four Internet activities. In the first project, students will use formulas for physical fitness and health and design their own exercise plan. For the second activity, they will write equations for the relationships among the ingredients in Hershey's "Perfectly Chocolate" chocolate chip cookie recipe. In the third one, students will solve equations for the cost of visiting the San Francisco Zoo. The last activity has students use equations and inequalities to find the amount of sales of gift items Ben & Jerry's Ice Cream needs to make a profit.
These teaching notes can be printed for quick referencing.
In this chapter students will:
- build on their knowledge of algebraic concepts and simple equations learned in Chapter 3
- learn to solve simple equations and inequalities that involve proportions
- learn to solve simple equations and inequalities that involve variables on both sides
- learn to solve simple equations and inequalities that involve absolute values
- learn to solve simple equations and inequalities that involve formulas
Prerequisite Skills
- understanding the terms numerator and denominator
- finding common denominators
- performing operations with integers
- understanding the term absolute value
- using number lines
- solving equations
- understanding concepts of inequalities
- performing multiplication and division with equalities
- solving inequalities
- understanding the different types of numbers
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