## Sunday, 21 December 2014

### Clock flowers in Year 4

In the course of our counting circle sessions we looked at clock counting (mod 60 counting).
We took this a bit further. using a Scratch project to generate these easily.

It was a great opportunity for mathematical noticing, reasoning and claim-making. For instance
1. The odd numbers go to every stop

1. I do not think so, because 15 is a odd number and it does not meet every stop
and

I notice that all of the prime number under 22 meet all of the numbers under 59 on the clock.It looks so cool!

1. What you say is almost true, Justus, but what about 2, 3 and 5?

What do you think?
2. 3 5 7 do not visit all of the numbers because are the factors of 60
The class also had a go at creating some of the "clock flowers" by hand:
and looked at the same thing in terms of division:

There's a lot more mileage in these clock patterns. Who knows where we'll take it next time... maybe string patterns?

#### 1 comment:

1. This looks like a great lesson! What is the code for the scratch program you used?