Patterns and Functions MATERIALS: 0-9 spinner

Geometrically Speaking

This activity works with geometric sequences. To begin, spin the spinner four times. Use these numbers to create a geometric sequence. One number needs to be the first term (a) of the sequence. Two of the numbers will be the common ratio (r), one of which is the numerator of the ratio, and the other is the denominator of the ratio. The last number will indicate how many terms of the geometric sequence you are to determine.

After everyone has created one sequence, exchange papers
and see if each of you can compute the indicated number of terms
of the sequence given to you. As a group, check the accuracy of these computations.

©Glencoe/McGraw-Hill Pre-Algebra