Teach Division Using Base Ten

Hello, I'm Claire and we're going to look today at how we can use the base 10 apparatus to teach division. So let's start by having a look at the question. It says, what is 45 divided by 3? So I've got my 45 out using the base 10 apparatus. I've got 10, 20, 30, 40 and 5 ones. So the next thing I need to do is to divide 45 into three groups and keep it equal. So I'm going to start by dividing my tens. I put 1:10 in the first group, 1:10 in the second group, 1:10 in the third group. Now I need to say to the children, what shall I do next? Because I've got a 10 here and I can't split that up between the three groups. Hopefully the children will have noticed that that 10 has been made out of 10 ones and so it can be exchanged. So I'm going to do that now. I'm going to take my 10 away and put in 10 new ones into my group. So adding my 10 ones to the five that I started with, I've now got 15 ones. Now, the next teaching point is to explain to the children, you need to make sure that you give group the same number of ones. So I'm starting by giving each group one, now two, Three, Four. And finally five ones. Now, the beauty of doing it this way is it's very visual and they can see straight away that it has divided absolutely equally. And in each group you've got 110 and 5 ones, which is, of course, 15. I can then go back to the question and say that 45 divided by 3 is 15. 15. So there we are. That's how we can use the base 10 apparatus to show division.