### Video Transcript

Is 13 even or odd?

In this question, we have to decide
if the number 13 is even or odd. We can model the number 13 using
some 10 frames. 10 and three more makes 13. To help us decide if this is an odd
or even number, we could see if we can make pairs of counters. If we can, we know that 13 is an
even number. If not, and as a counter left over,
we know 13 is an odd number.

So, let’s see if we can make
pairs. Here’s one, here’s another pair,
here’s another pair, and two more pairs. So far, we’ve been able to divide
our 10 counters into five pairs. So, we know that 10 is an even
number. Another pair makes 12. And we’ve got one counter left
over. So, we can’t make this into a
pair. So, the number 13 is an odd
number. We modeled the number using 10
frames and then we make pairs of counters. There was one counter left
over. So, we know that 13 is an odd
number.