Mrs. Brown's Fourth Grade Blog

…our learning adventure

Adding & Subtracting Fractions

March16

Students are using pattern blocks to add and subtract fractions. This provides students a visual representation of what it really means to add and subtract fractions that have different denominators. By switching out one larger pattern block for smaller pattern blocks, we have concrete examples of the operation. One method is the “take-away” method. Students pull out the starting pattern blocks, and then remove the amount they are subtracting. What is left is the answer. In the video below, Alexis is demonstrating the “cover up” method of subtraction with fractions.

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