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MATH MAGIC Making Math Magic

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NUMBER TRICK #1 Think of a number. Add 3. Multiply by 2. Add 8. Divide by 2. Subtract your original start number. What is your result? Making Math Magic

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Try it again……. Think of a number. Add 3. Multiply by 2. Add 8. Divide by 2. Subtract your original start number. What is your result? Making Math Magic

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Trick #2 Pick your favorite number between 1-9 Multiply by 3 Add 3 Multiply by 3 again (I’ll wait while you work it out....) You'll get a 2 or 3 digit number… Add the digits together Now find that number on the next slide to see who your role model is... Making Math Magic

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1. Einstein 6. Gandhi 2. Nelson Mandela 7. Muhammad Ali 3. Abraham Lincoln 8. Thomas Edison 4. Helen Keller 9. Mrs. Hall 5. Bill Gates 10. Oprah Winfrey Making Math Magic

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1. Einstein 6. Gandhi 2. Nelson Mandela 7. Muhammad Ali 3. Abraham Lincoln 8. Thomas Edison 4. Helen Keller 9. Mrs. Hall 5. Bill Gates 10. Oprah Winfrey Making Math Magic

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BACK TO TRICK #1 Think of a number. Making Math Magic X

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BACK TO TRICK #1 cont. Add 3. Making Math Magic X 111

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BACK TO TRICK #1 cont. Multiply by 2. Making Math Magic X 111 X 111

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BACK TO TRICK #1 cont. Add 8. Making Math Magic X 111 X

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BACK TO TRICK #1 cont. Divide by 2. Making Math Magic X 111 X

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BACK TO TRICK #1 Subtract your original number. Making Math Magic X

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BACK TO TRICK #1 What is your result? Making Math Magic

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BACK TO TRICK #1 Think of a number. Making Math Magic X ALGEBRAIC NOTATION: x

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BACK TO TRICK #1 cont. Add 3. Making Math Magic X 111 ALGEBRAIC NOTATION: x+ 3

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BACK TO TRICK #1 cont. Multiply by 2. Making Math Magic X 111 X 111 ALGEBRAIC NOTATION: (x + 3)2= 2x + 6

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BACK TO TRICK #1 cont. Add 8. Making Math Magic X 111 X ALGEBRAIC NOTATION: 2x = 2x + 14

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BACK TO TRICK #1 cont. Divide by 2. Making Math Magic X 111 X ALGEBRAIC NOTATION: (2x + 14) ½= x + 7

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BACK TO TRICK #1 Subtract your original number. Making Math Magic X ALGEBRAIC NOTATION: = x x 7

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On the next slide we’ll go back to Trick #2 Your job will be to model the steps with the manipulatives and to show the algebraic notation.

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Trick #2 Pick your favorite number between 1-9 Multiply by 3 Add 3 Multiply by 3 again (I’ll wait while you get the calculator....) You'll get a 2 or 3 digit number… Add the digits together Now find that number on the next slide to see who your role model is... Making Math Magic

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