Math 351, Fall 2005 – Fraction Activity
For each of the following:
A. Draw a pictorial representation and use it to solve the problem. You may either use one
of the three physical models {area, length-measurement, or discrete}, OR you may draw
manipulative pictures {fraction circle, Cuisenaire rod, or pattern blocks}.
B. Write a simple arithmetic expression that can also be used to describe the solution and
explain why the arithmetic expression is appropriate. (e.g. ¾ + 1/3 is a simple arithmetic
expression)
1. Charlie Brown has four-fifths of a pie. Lucy has twice as much as Charlie Brown. How much pie
does Lucy have?
2. Charlie Brown has three-fifths of a pie. Lucy has two-thirds of the amount that Charlie Brown
has. How much pie does Lucy have?
