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Home : 2001 : Apr : 23
PUT THE NUMBERS 2,3,5,7,11 ON THE BOARD. TELL YOUR STUDENTS THESE ARE MAGIC #S. YOU CAN USE THEM TO REDUCE ANY FRACTION IN THE 4TH GRADE! LET'S SAY THAT YOU WANT TO REDUCE 8 12THS. WHAT YOU DO IS LOOK AT THE #S AND SEE WHICH ONE WILL GO INTO BOTH #S EVENLY. I PUT ANY UPSIDE DOWN DIVISION HOUSE UNDERNEATH THE FRACTION. I PUT MY REDUCING UNDERNEATH THE NUMBERS.YOU CAN USE ANY OF THE #S, AND YOU CAN USE THEM MORE THAN ONCE. THEY HAVE TO KEEP GOING UNTIL THE NUMBERS CANNOT BE REDUCED. REMEMBER THE # CHOSEN MUST DIVIDE INTO BOTH #S. I HOPE YOU CAN UNDERSTAND THIS. ONCE YOU GET USED TO THIS YOU WILL NEVER USE THE GCF TO REDUCE FRACTIONS. GOOD LUCK!!MAKE THE LAST STEP OF EVERY PROBLEM TO REDUCE BY THE 2,3,5,7,11 METHOD.EMAIL ME IF YOU"D LIKE.
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