Day 2 - Introduction:     Use formulas to solve problems involving real world data.                                                                       

LESSON OVERVIEW

Math:  Introduce the students to the use of formulas to solve real world problems to include the use of the distance formula: d = r x t, the perimeter formula for rectangles: P = 2l + 2w, and the area formula for rectangles: A =  l x w. Students will assigned various problems involving distance, rate and time, and perimeter and area of rectangles to solve using math or equation solving techniques.

INSTRUCTIONAL GOALS

Students will be able to identify the correct formula to use based upon data given, perform calculations required to solve for the required data, and use the correct format to show required work.

 TN STANDARDS

2.6     Apply the concept of variable in simplifying algebraic expressions, solving equations, and solving

          inequalities;                                              

1.10   Select and apply an appropriate method (i.e., mental arithmetic, paper and pencil, or technology) for

          computing with real numbers, and evaluate  the reasonableness of results;

 4.5   Demonstrate an understanding of rates and other derived and indirect measurements (e.g., velocity,

         miles per hr. and cost per unit)

FORMATIVE ASSESSMENT

No assessment

Opening the Lesson:
10 minutes

Use Glencoe Mathematics: Pre-Algebra text book; Lesson 3-7 ; Using Formulas or similar text.

Define the vocabulary words: formula; perimeter; and area.

Introduce the distance formula, the perimeter formula and the area formula.

Provide the following steps to properly show all the required work to solve any formula.

Step 1.  Write the formula to be used.

Step 2. Write down all the given data for the formula in the following format:

             Given d = 26 mi.  etc

Step 3. Write down the missing data for the formula in the following format:

             Find r.

Step 4. Substitute given data for the variables in the formula.

Step 5. Use proper equation solving techniques to find the missing variable.

Developing the Lesson:

35 minutes

Provide example problems for students to practice the formula solving techniques introduced in the lesson opening.  From the Glencoe text use Problems 4 through 11, page 133 & 134.

After completion of teacher/student work; assign Problems 12 through 29, page 134 as classroom work for all students.

Monitor work to insure that students are using the proper equation solving techniques and showing their work according to directions given in the lesson introduction.

Closing the Lesson:
5 minutes

Collect classroom assignment for grading and assign Workbook page   for homework and further development of the lesson.

TEACHING RESOURCES

Glencoe Mathematics Pre-Algebra textbook (or similar text), Glencoe workbook, calculators, and pencil and paper.

LAB SAFETY

No safety concerns.

ACCOMMODATIONS FOR SPECIAL LEARNERS

Special ED and ESL students can be assigned the even or odd problems from each assignment.