Education Technology

Algebra I: Area "FOILed" Again!
by Texas Instruments - Bell Ringer Lesson

Published on September 29, 2010


Students practice finding rectangular areas with algebraic expressions for the lengths of the sides.

Key Steps

  • Image

    In the first problem, students investigate the distributive property to simplify an expression for the area of a rectangle. The interactive program AREA allows students to change the width of the rectangle, changing the number students need to distribute.

  • Image

    Students will also make the connection between the 4 terms produced when using the FOIL method and the 4 areas of the smaller rectangles. Using the interactive option in the program AREA, students can enter the numbers of the binomials representing the sides of the rectangle. The process of calculating the area is demonstrated by using FOIL and then combining like terms.