The Team continued its dive into the discovery of prime and
composite numbers today!! Our strategy today in determining if a number
is prime or composite was to create a factor rainbow (with the assistance of our handy hundreds charts!). Here is
a sample of our findings...and a cheat for becoming familiar with the
terminology for our new unit.
Ask your child to explain
if 18 is a prime or composite number.
(Answers: Composite, because:
-there is more than one factor pair.
-there are more than 2 factors.
-I can build more than 2 rectangular arrays for this number.)
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