Teaching Algebra with Manipulatives

Surface Area
NAME ______________________________________________ DATE ____________ PERIOD ____
Algebra Activity Recording Sheet
(Use with the activity on page 122 in Lesson 3-1 of the Student Edition.)
Materials:
rectangular box, scissors
Analyze
1. Write an expression for the area of the front of the box.
2. Write an expression for the area of the back of the box.
3. Write an expression for the area of one side of the box.
4. Write an expression for the area of the other side of the box.
5. Write an expression for the area of the top of the box.
6. Write an expression for the area of the bottom of the box.
7. The surface area of a rectangular box is the sum of all the areas of the
faces of the box. If S represents surface area, write a formula for the
surface area of a rectangular box.
Make a Conjecture
8. If s represents the length of the side of a cube, write a formula for the
surface area of a cube.
© Glencoe/McGraw-Hill 56 Teaching Algebra with Manipulatives