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POP ‘Rules’
Before we investigate some rules about pop-ifying, we need to know what it means to pop-ify!

Get into groups of 4. Explore the table below.


              ⊙       1       2       3          4        5   6       7        8         9

              1       3       4       5          6        7   8       9       10         11

              2       5       6       7          8        9   10      11      12         13

              3       7       8       9      10          11   12      13      14         15

              4       9      10      11      12          13   14      15      16         17

              5       11     12      13      14          15   16      17      18         19

              6       13     14      15      16          17   18      19      20         21

              7       15     16      17      18          19   20      21      22         23

              8       17     18      19      20          21   22      23      24         25

              9       19     20      21      22          23   24      25      26         27


Write an expression for a⊙b. Explain how you reasoned to this expression.



                           a⊙ b =



Evaluate: !   10⊙5!                                  21⊙23!                        a⊙a




✦   Number yourselves off 1 to 4. Get into your expert groups.
✦   In your expert group, investigate the given expressions and come up with a general rule for each.
✦   When instructed to do so, return to your initial group and explain the rules you discovered.
✦   Using the concept of pop-ifying,          ✦   Using the concept of pop-ifying,
    investigate each expression and develop       investigate each expression and develop
    a general rule expressed in terms of ⊙.       a general rule expressed in terms of ⊙.
✦   Explain your reasoning.                   ✦   Explain your reasoning.


                                                      ( a + c )  (b + d )
       ( a × k )  (b × k )
                                                     ( a + k )  (b + k )
                 a b
                  
                 k k                                  ( a − c )  (b − d )
                                                     ( a − k )  (b − k )



✦   Using the concept of pop-ifying,          ✦   Using the concept of pop-ifying,
    investigate each expression and develop       investigate each expression and develop
    a general rule expressed in terms of ⊙.       a general rule expressed in terms of ⊙.
✦   Explain your reasoning.                   ✦   Explain your reasoning.


                 a0                                     even  even
                 0a                                      even  odd
                  a 1                                    odd  even
                 1 a                                      odd  odd

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Popify

  • 1. POP ‘Rules’ Before we investigate some rules about pop-ifying, we need to know what it means to pop-ify! Get into groups of 4. Explore the table below. ⊙ 1 2 3 4 5 6 7 8 9 1 3 4 5 6 7 8 9 10 11 2 5 6 7 8 9 10 11 12 13 3 7 8 9 10 11 12 13 14 15 4 9 10 11 12 13 14 15 16 17 5 11 12 13 14 15 16 17 18 19 6 13 14 15 16 17 18 19 20 21 7 15 16 17 18 19 20 21 22 23 8 17 18 19 20 21 22 23 24 25 9 19 20 21 22 23 24 25 26 27 Write an expression for a⊙b. Explain how you reasoned to this expression. a⊙ b = Evaluate: ! 10⊙5! 21⊙23! a⊙a ✦ Number yourselves off 1 to 4. Get into your expert groups. ✦ In your expert group, investigate the given expressions and come up with a general rule for each. ✦ When instructed to do so, return to your initial group and explain the rules you discovered.
  • 2. Using the concept of pop-ifying, ✦ Using the concept of pop-ifying, investigate each expression and develop investigate each expression and develop a general rule expressed in terms of ⊙. a general rule expressed in terms of ⊙. ✦ Explain your reasoning. ✦ Explain your reasoning. ( a + c )  (b + d ) ( a × k )  (b × k ) ( a + k )  (b + k ) a b  k k ( a − c )  (b − d ) ( a − k )  (b − k ) ✦ Using the concept of pop-ifying, ✦ Using the concept of pop-ifying, investigate each expression and develop investigate each expression and develop a general rule expressed in terms of ⊙. a general rule expressed in terms of ⊙. ✦ Explain your reasoning. ✦ Explain your reasoning. a0 even  even 0a even  odd a 1 odd  even 1 a odd  odd