A short instructional video (presenter: Zoe) introducing place value for pupils. It distinguishes digits from numbers, explains ones/tens/hundreds/thousands as place-value columns (each column 10× the one to its right), demonstrates moving a digit (8→80→800), explains zeros as placeholders, and models forming the number 2,046 using a place-value chart while recommending chart use to build conceptual understanding.
Chapters
Hi, I'm Zoe, and in this video we're going to look at an introduction to place value. Now, any number we make is made up from these 10 digits. All our numbers, irrespective of size, use these digits to make them. Now, it's important that these digits are called digits. Only when they are assigned in our place value chart do they then become numbers. So it's very important that children understand this concept. Otherwise it can lead to lots of misconceptions later on when they start to do some calculations. So let's have a look. So we're going to take the digit 8 and we're going to place it in our first column, the ones column. And now that has taken on the value of 8 ones and has become the number 8. It's very important that we call this the ones column and not the units column. The units refer to values of measurement. So now if we move our eight from the ones column into this column, it's taken on a different value. It's now 8 tens and has become the number 80. Every column to the left is 10 times bigger than the one before. So if we move our 8 into the next column, it's now got the value of 800. 800. Now, it's very simple when we've got our place value chart, but we can't be drawing this chart out every time we want to write a number. So how, how do we tell that that is eight hundreds? Well, we use something called placeholders, and that's what our zeros are for. So here we have 0 tens and we have 0 ones gives us our value 800. It's really important that we're asking pupils, what does the zero go? Why am I putting the zero and not another number in there? So that they can get that concept of place value. In order for pupils to really understand this, it's great if they can use these place value charts and investigate putting numbers in different places and being able to refer that this is six ones, four tens, two thousands, no hundreds, the number 2,046. And that's how we start to introduce place value.
