Let's count together in fives: five, ten, fifteen, twenty… keep going.

Look at where those numbers land. What do you notice about the last digit of every fives number? Hands up if you can say what they all end in.

Here are three counting patterns shaded on the hundred square. Watch how each one leaves its own trail.

The twos fill in the even columns. Look what shape the fives make.

Now the threes. Do they make columns like the fives, or something different?

Now we shade some counting patterns together on the grid. One pupil taps at the board while the whole class counts aloud together, so everyone has a part to play.

We'll do the 4s first, then the 5s again to prove they match our counting, then the 10s. Watch which of the 10s are already shaded from the 5s.