Texas Instruments TI-73 - Manual (Page 18)

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© 1998 T EXAS I NSTRUMENTS I NCORPORATED
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.