Lesson video

Hello, my name's Mrs. Jones, and I'm really pleased you decided to join this lesson today.

In this lesson, we will look at how we can trust data.

There are lots of different sources of data, and knowing what we can trust as reliable data is important.

This helps us use the right information, the right data, and not the unreliable data, which won't help us answer any questions.

So let's get started and learn about how to find the right data to trust as reliable.

Welcome to today's lesson.

Today's lesson is called "Trusting Data" from the unit "Data Detectives".

And by the end of this lesson, you'll be able to identify whether a data source is reliable.

There are two keywords to today's lesson.

Reliable.

Reliable means can be trusted because it is accurate and consistent.

Trust.

Trust is believing that something is true or correct.

There are two sections to today's lesson.

The first is "Identify data sources", and the second, "Judge reliability of sources".

So let's start with "Identify data sources".

At Oak Academy Zoo, a rhino called Ruby is missing.

We will look at a range of data sources to discover what has happened.

Data can come from many different sources.

As you can see here, we've got a calendar, we've got a phone, we've got someone talking, we've got checklists.

A data source is where information comes from.

Different sources can describe the same event.

Jacob says, "They all talk about Ruby, but in different ways.

" Some sources are created to record information carefully.

Other sources are created to share ideas or opinions.

Some of these are made to record facts.

Here are four sources that talk about Ruby.

Each source gives information in a different way.

So we have social media, visitor rumors, zookeeper log, and vet schedule.

Let's have a quick check.

True or false?

"A data source is where information comes from.

" Is that true or false?

Pause the video and have a think, and then we'll go through the answer.

Let's have a look at the answer.

The answer is true.

Well done if you got that correct.

Why is that true?

Pause the video and have a think.

Can you explain why that is true?

Then we'll go through the answer.

Let's check your answer.

A data source is the place where information is recorded or shared.

Well done if you got that correct.

Social media post.

Jacob says, "Anyone could post things like this.

" So here we've got on a phone showing, "I saw Ruby running across the zoo this morning.

" Which is very true, Jacob said anyone could post things like that.

Social media posts are shared quickly.

They are not always checked for accuracy.

Sofia says, "We can't tell if this is true.

" We don't know if Ruby was running across the zoo that morning.

A visitor rumor.

So here we've got somebody saying, "Someone said the rhino escaped before lunch.

" Rumors are passed from person to person.

They can change, may not be accurate.

Jacob says, "It might not be correct.

" Zookeeper log.

So here we have that zookeeper log for the rhino enclosure.

At 8:30, Ruby was eating.

9:30, Ruby was asleep.

10:00, the zoo opened.

Ruby was walking around the enclosure.

10:30, there was a rhino talk to visitors.

And 11:00, the enclosure was checked and Ruby was not seen.

Zookeeper logs are written by staff.

They record what happened at a specific time.

Sofia says, "This is all written down and recorded properly.

" The vet schedule.

So we have a vet appointment list here and the names and the times.

Mango Monkey, in at 9:15.

Percy Panda, in at 10:15.

Ruby Rhino, in at 11:15.

And Kiki Koala, at 12:15.

Vet schedules are planned in advance so that the zookeeper can transport the animals in time.

They are checked and updated carefully.

Jacob says, "This looks organized.

" Which it does, it looks very organized there.

Let's have a quick check.

Which of these is a data source?

Is it A, a zoo gate, B, a vet schedule, C, a zookeeper log?

Pause the video and have a think.

Which of those are data sources?

And then we'll go through the answer.

Let's check your answer.

The answer was B, a vet schedule, and C, a zookeeper log.

Well done if you got that correct.

Let's do the activity.

Here are five examples of information about Ruby.

We have a social media post, a visitor rumor, a zookeeper log, a closed zoo gate, a vet schedule.

Identify which of these are data sources and explain what makes them sources.

Pause the video and have a go at that activity to identify which of those are data sources, and then explain what makes them sources.

And then we'll go through the answer.

Let's check your answer.

A social media post is a data source because it shares information about what someone claims happens.

A visitor rumor is a data source because it is information being shared about an event.

A zookeeper log is a data source because it is written record of what happened.

A closed zoo gate is not a data source.

A vet schedule is a data source because it records planned appointments and times.

Well done if you got those correct.

Let's move on to the second part of today's lesson, "Judge reliability of sources".

Some sources are more reliable than others.

Reliable sources record information carefully.

Sofia says, "Reliable records are checked.

" Reliable data is more trustworthy.

This means that it can be used to explain what happened.

Sofia says, "I can see Ruby was moved for a vet visit.

" So we have that vet appointment list and we can see that Ruby Rhino had a vet visit at 11:15.

Unreliable sources can lead to incorrect conclusions.

Jacob says, "If we use the wrong sources, we might not get the right answer.

" When deciding if a source is reliable, it helps to ask, who created it?

Why was it created?

And was it checked?

Let's have a quick check.

Which of these questions can help you decide if a source is reliable?

Is it A, who created it?

B, why was it created?

C, is it interesting?

D, was it checked?

Pause the video, have a think about your answer, and then we'll go through it.

Let's check your answer.

The answer was, A, who created it?

B, why was it created?

And D, was it checked?

Well done if you got those correct.

The social media post and rumor do not record information carefully.

They are less reliable.

So we had the rumor that said, "Someone said the rhino escaped before lunch.

" And the social media post was, "I saw Ruby running across the zoo this morning.

" They are less reliable.

Let's have a quick check.

True or false?

"Using unreliable data can lead to incorrect conclusions.

" Pause the video and have a think.

Is that true or false?

"Using unreliable data can lead to incorrect conclusions.

" And then we'll go through the answer.

Let's check your answer.

The answer is true.

Well done if you got that.

Why is it true?

Pause the video and have a think.

Can you explain why that is true?

Then we'll go through the answer.

Let's check your answer.

If unreliable data is used, it may lead to conclusions that are wrong.

Well done if you got that correct.

The zookeeper log and vet schedule are written records created by staff.

They are more reliable.

You have the zookeeper log on the left, which shows that, at 8:30, Ruby eating.

9:30, Ruby asleep.

10:00, the zoo opened, Ruby walking around the enclosure.

10:30, rhino talked to visitors.

11:00, enclosure checked, Ruby not seen.

And on the right, we have the vet times.

Mango Monkey at 9:15, Percy Panda at 10:15, Ruby Rhino at 11:15, and Kiki Koala at 12:50.

Those are reliable.

The reliable sources show that Ruby was moved as part of a planned vet visit.

So we can see at 11:00 the enclosure was checked and Ruby was not seen.

And Ruby had a vet appointment at 11:15.

Using reliable data helps us explain what happened clearly.

Jacob says, "Both reliable sources tell the same story.

" Let's do the activity.

Here are four sources about Ruby.

Social media posts, visitor rumor, zookeeper log, vet schedule.

Circle the two most reliable sources and write one sentence to explain why they are reliable.

Pause the video to complete the activity and then we'll go through the answers.

Let's check your answers.

So the zookeeper log and the vet schedule were the reliable sources.

The zookeeper log and vet schedule are the most reliable sources as they are recorded and checked information.

Well done if you got those correct.

Let's do the next part of the activity.

Using the zookeeper log and the vet schedule, write one sentence that says what happened to Ruby.

Highlight the parts of the zookeeper log and vet schedule that support your sentence.

Pause the video to complete this next part of the activity and then we'll go through the answers.

Let's have a look at the answers.

So we have the highlighted sections there, the 11:00 and 11:15, so the enclosure checked, Ruby not seen, and Ruby Rhino at the vet time at 11:15.

And the sentence that's been written here, we have, "I think Ruby must have visited the vet because she was missing at 11:00 and then had a vet appointment at 11:15.

" Well done if you got those correct.

In summary, data can come from many different sources.

Some sources are more reliable than others.

Reliable data is more trustworthy because it is recorded carefully and checked.

Unreliable data may not be accurate and can lead to incorrect conclusions.

Choosing reliable sources helps us explain what happened clearly.

Well done for completing this lesson, "Trusting Data".