Lesson video

Hi, everybody.

Welcome back to our unit on data.

Today, we are going to be constructing pictograms that our tour guides have collected data for us.

So what you need to do is put on your hat's, tighten those ties, and tell the computer now I'm a mathematician.

For this lesson, you're going to need the following resources: a pencil, a piece of paper and a ruler.

Please make sure you have these things in front of you.

And if not pause the video now to go collect them.

Great.

Let's get started.

So here is our lesson agenda.

First off we're going to do our Star Words, before moving on to do our Do Now, then we going to be reading data before you create your own pictograms. Here you are.

Star Words.

So today we're going to be using pictograms, tally charts and frequency tables.

We're going to be comparing data, reading scales, and looking at our data carefully.

Here is our Do Now.

Key Stage Two at Butterfield Primary School are collecting sports vouchers.

They want to collect 5,000 vouchers to get a class set of tennis rackets.

How many more vouchers do they need? What other information does the pictogram tell you? So we can see that each tennis ball stands for a hundred vouchers.

So pause this video and have a go.

Great job.

Let's go through this together.

So let's count to see how many they got.

100.

200.

300.

400.

500.

600.

700.

800.

900.

1,000.

Now we also have half a tennis ball.

This half will represent 50.

So we have 1050.

And then this little tennis ball is going to represent quarter of 100, which is 25.

So in total they have 1,075 vouchers, but they need 5,000.

So now we need to do some subtraction.

We need to do 1000 takeaway, sorry, 5,000 takeaway 1,075, which leaves us with 3,925 left to collect.

So they've got to do a lot of collecting of sports vouchers to get those tennis rackets.

Tim and Julie, our tour guides in New York, have collected some data about what tourists most like to eat whilst they're in New York.

And they ask people to choose their favourite food from the following: pizza, doughnuts, pretzels, hot dogs and cheesecakes.

Yum, yum, yum.

And here you can see, they have collected all the data in a tidy chart and they have all their data in a frequency table, which they then put into a pictogram.

What do you think about this pictogram? Is it very easy to read? Look at the difference.

It's not the easiest, is it? Because each picture's worth two and it's going to take quite a long time to count them all up.

How could it be easier to read? Well, instead of each picture representing two, each picture could represent a larger number.

So here we have some examples.

Here one picture will represent eight.

So our pretzel here is worth eight.

And we have half a picture.

So each of this represent half of eight, which is four.

And then we have three quarters of the picture.

Now, if half is four, then three quarters is going to be six, and a quarter will be two.

Having this way of presenting images, or representing the numbers, is much easier to read because our pictogram will be much smaller.

So for your independent task, you're going to be creating your own pictogram.

First you need to look at the tally chart, put all of this data into our frequency table, and then you can draw your pictogram.

Remember to choose a sensible scale.

So pause this video and create your pictogram.

Great job, everybody.

I hope you enjoyed drawing pictograms today.

If you'd like to, please ask your parents or carer to share your work on Twitter tagging @OakNational and hashtag LearnWithOak.

It was great learning with you.

I look forward to our next lesson.

Bye.