How to multiply with the Happy Hundred and Tweaky Twelve Basically we use the easy five times table
to do other multiplications. Example: what is 7 x 8 or 7 rows of 8, see the dotted rectangle above.
Student folds back on the dotted lines, so you see the 7 x 8 array. Ask: “How many groups of five do you
see? Remember: the fives can be horizontal and vertical.” Shapes that show 5 such as the yellow 5-rods
(Cuisenaires) help count groups of 5. Fill up the whole array with rods and ones, a rods track shows total.

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