The Twin's Towers - Texas Instruments TI-73 Teachers Manual

Activity 5

The Twin's Towers

Students develop the concept of a variable while solving
problems using the b key and the - ¢ key.
Setup
Discuss the following situation with your class.
My twin brother and sister are building towers with
blocks. They built them in the following ways.
1-level tower
The twins want to know how many blocks they will need
for a tower 27 levels high. Can you help them find this?
No. of levels
No. of blocks
2-level tower
1 2 3
3 4 5
Patterns and Functions
Materials
3-level tower
4 5 . . . . . . 27
6 7 . . . . . . 29
© 1998 T
problem solving
percents
adding fractions
blocks or cutouts
student activity sheet (provided)
TI-73 ³
Build the towers with
blocks as you discuss this
activity or have the
students build them with
you.
I I
EXAS NSTRUMENTS NCORPORATED
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