Texas Instruments TI-73TP Teachers Guide - Page 18

13 Activity 4 Stadium Walls Students investigate real-life situations and find patterns by making concrete representations and making T-charts. Students then describe and generalize these patterns verbally, symbolically, and graphically. Patterns and Relations ♦ patterning ♦ graphing ♦ evaluating expressions ♦ equivalent math expressions Materials ♦ graph paper ♦ toothpicks ♦ TI-73  Setup Present the following problem to students. An engineer designs the skeleton for the walls of a new stadium from equal lengths of steel beams that are placed in a rectangular pattern as shown below. The engineer knows that one wall has to have a length of 57. How many steel beams are needed for this wall? length 1 length 2 length 3 (This view is from the front.) The length of each wall is measured by the number of beams along the bottom of the wall. © 1998 TEXAS INSTRUMENTS INCORPORATED