Lesson video

Hello everyone.

How are you today?

I hope you're feeling really good.

My name is Miss Afzal and I'll be your teacher for this lesson.

I'm feeling really excited about that because today we're looking at bones.

Yes, bones that we all have in our body.

We're going to be exploring bones.

I wonder if you already know much about bones.

Don't worry whether you do or you don't, we are gonna be getting right into it today.

Our lesson is called Bone length: plan and do.

And it comes from the unit of work an introduction to the human skeleton and muscles.

So if you're ready with some energy, focus, enthusiasm, some bones in your body, then we'll begin.

The outcome for today's lesson is I can plan and carry out an investigation to find out if bones grow as we get older.

I hope that sounds of interest to you.

We have some keywords in our lesson.

Let's go through them one at a time.

My turn, your turn.

Plan.

Measure.

Equipment.

Record.

Data.

I liked hearing those words loud and clear.

Our keywords are plan, measure, equipment, record, and data.

I wonder do you know any of these words?

Have you heard of any of them before?

Pause here and share with someone if you have.

Thanks for sharing.

Let's find out more about these keywords.

A plan has all the steps that will be taken during an investigation.

To measure is to use equipment, to find numbers to describe something such as its length, weight, size, or time.

Equipment includes all the things needed to carry out an investigation.

To record information is to keep it so that it can be passed on to others.

Data is information collected during an investigation.

It may be numbers, symbols, pictures, texts, graphs, and more.

These are our keywords, plan, measure, equipment, record and data.

Let's look out for them.

Let's listen out for them.

They will be coming up in our lesson today.

Our lesson is called Bone length: plan and do, and it has three learning cycles.

First of all, do bones change?

Next, scientists plan how to answer questions.

And finally, scientists record data from their investigations.

So scientists, are you ready?

Let's begin with exploring the question do bones change?

Look at the height of this human at different ages.

A baby, so cute, toddler, young child, slightly older child, and then an adult.

What happens to the height of humans as they get older and why do you think this is?

Pause here and share with someone what do you think.

Thanks for sharing.

I wonder what ideas you came up with.

Bone is a living thing.

And there we can see a section of a living bone.

Our bones change throughout our lives.

From when we are born our bones begin to grow.

As some of our bones get longer, we get taller.

I wonder if that's what you said earlier.

Some scientists study only bones.

Here we can see a bone scientist looking carefully at some bones.

They study skeletons from people who have died a long time ago to find out about bone history.

They also study bones from people who are alive today.

Bone scientists ask lots of questions about bones.

They find out about how bones change throughout our lives.

Take a look at this bone scientist.

Maybe recording some data or some notes.

These bones look like they belong to a male.

I wonder how old he was when he was buried.

What question could you ask about bones and how they change?

Pause here and share with someone.

Thanks for sharing.

I wonder what questions you came up with.

Let's have a check for understanding.

Which statement below about bone is true?

A, bone is a living thing.

B, bone is not a living thing.

C, bone stays the same and never changes.

Pause here while you decide which of these statements about bone is true.

Well done if you selected answer A.

Indeed, bone is a living thing.

Let's have another check for understanding.

What do you know about bone length and what do you think about each statement?

And you can tick either, I am sure this is right, I think this is right, I think this is wrong, or I'm sure that this is wrong.

Here's our first statement A.

Leg bones stay the same size as you grow from child to adult.

Pause here and decide what you think about this statement.

Well done if you selected either I think this is wrong or I'm sure this is wrong.

Next statement.

Leg bones shrink as you grow from child to adult.

Are you sure this is right, think this is right, think it's wrong, or sure that it's wrong?

Pause here while you you choose.

Well done if you selected either I think this is wrong or I'm sure this is wrong.

And here's our final statement.

Leg bones get bigger as you grow from child to adult.

Pause here while you decide what you think about this statement.

Well done if you selected either I'm sure this is right or I think this is right.

Indeed, leg bones do get bigger as you grow from child to adult.

And now it's time for your first task.

I would like you to use a tape measure to measure the length of different bones in centimeters.

Have a go at measuring on a partner.

You can measure it from the thigh down to the knee.

That's the femur.

Or you could measure it from the shoulder to the elbow.

That bone is called the humerus.

What do you notice about the length of different bones and are your bones the same length as your partner's bones?

Pause here while you have a go at this task, measuring the length of different bones in centimeters and answering these questions.

I'll see you when you're finished.

Great to be back with you.

So how did you get on and what did you discover?

Are your bones the same length as your partner's bones?

Here's Jun.

I measured Izzy's femur, it was two centimeters longer than my femur.

And Izzy.

I measured Alex's humerus, which was one centimeter shorter than my humerus.

And Alex.

Both my humerus and femur were longer than Jun's.

Thanks for having a go at that task.

And now we're onto our next learning cycle.

Scientists plan how to answer questions.

Scientists ask questions and then plan how to carry out the right type of investigation to find answers.

Our question today is do bones grow as we get older?

What will you do to find answers to this question?

Pause here and share with someone.

Thanks for sharing.

Andeep chooses a bone he would like to investigate and asks, do people's heads grow bigger as they get older?

Andeep makes a plan.

He decides to measure and compare the heads of different aged people to find the answer to his question.

Good plan, Andeep.

As part of his plan, Andeep needs to choose the correct equipment to make his measurements accurately.

He needs to measure around people's heads, but there are different types of equipment for measuring length.

A ruler or tape measure, which could he choose?

Which equipment would not be suitable?

Pause here and share with someone what do you think.

Thanks for sharing.

Andeep plans to use a tape measure because it is flexible.

He decides to measure his younger brother's head who's age two, his own head, he's age seven, his older sister's head, aged 18, and his dad's head who's age 41.

And now we can see someone measuring head circumference, it means all the way around.

Let's have a check for understanding.

Andeep plans to answer his question, do people's heads grow bigger as they get older?

Who do you think you should measure?

Jun, you need to measure lots of children's heads who are all the same age.

Izzy, you need to measure lots of people's heads who are all the same height.

Alex thinks you need to measure lots of people's heads, including children and adults of different ages.

Hmm, what do you think?

Who do you think he should measure to answer his question, do people's heads grow bigger as they get older?

Pause here while you decide.

Well done if you selected Alex's statement, indeed, Andeep would need to measure lots of people's heads, including children and adults of different ages in order to answer his question of do people's heads grow bigger as they get older?

Well done if you selected this answer.

Let's have another check for understanding.

Which equipment would you use to measure bone length?

A, weighing scales.

B, a measuring cylinder.

Or C, a tape measure.

Pause while you decide which equipment you'd use to measure bone length.

Well done if you selected answer C.

Indeed, a tape measure would be the best piece of equipment to use to measure bone length.

Let's have another check for understanding.

Which of these questions might a bone scientist ask?

A, does the size of your feet change as you get older?

B, does the length of your leg affect how high you can jump?

Or C, what's the best material for making a shoe?

Pause here while you decide which of these questions might a bone scientist ask?

Well done if you selected the questions A and B.

These are questions that a bone scientist might ask.

And now it's time for your next task.

Our question is, do bones grow as we get older?

I'd like you to talk about your ideas and make a plan.

First of all decide bone you're going to investigate.

Next, consider which people you may measure.

After that, what equipment will you need to measure this part of their body?

So pause here while you have a go at this task, making your plan.

It is good to be back with you.

How did you get on with making your plan to answer the question do bones grow as we get older?

Here's Jun.

I will measure the width of a wrist from a three-year-old, a seven-year-old, a 10-year-old, a 16-year-old, and my mom using a tape measure.

Good thinking.

And Izzy, I'll measure the length of a foot from my younger sister, older brother, older cousin, step-dad, and my own foot.

I will use a tape measure.

Well done for making your plan.

And now we're onto our next learning cycle, scientists record data from their investigations.

When scientists investigate, they observe and measure things to gather information about what is happening.

What information have you gathered in your own science lessons?

Pause here and share with someone.

And maybe some of these pictures of science investigations might jog your memory.

Thanks for sharing.

The information gathered from an investigation is known as data.

It's one of our keywords.

Data is recorded information, and can be numbers, photos, drawings, and much more.

Here's Izzy.

My data shows that my thumb is five centimeters long, but my granddad's thumb is seven centimeters long.

Data is the information that we can collect about the world.

Scientists make decisions about how to record data in their investigations.

Data is often recorded using tables and charts.

Here we can see some charts that are being used to show data from an investigation.

Perhaps you've seen some data recorded in this way.

Pause here and share with someone if you have.

Thanks for sharing.

Andeep decides to record the data from his investigation in a table.

So he's going to have the age of person in years in the first column and then the circumference of the skull in centimeters in the next column.

And here's Andeep's question.

Do people's heads grow bigger as they get older?

His table has headings and the correct units of measurement so that other people understand the data he collects, rather than just putting in numbers without any reference to what these numbers mean.

Let's have a check for understanding.

Fill in the missing word using one of the words below.

The information that scientists collect and record in an investigation is called?

Is it called units, measurement, or data?

Pause here while you decide.

Well done if you selected the word data.

Indeed, the information the scientists collect and record in an investigation is called data.

Let's have another check for understanding.

Which of the following would you use to record data?

A, a tape measure.

B, a table.

Or C, a chart.

Well done if you selected answers B and C.

You could use a table or a chart to record your data.

Andeep has recorded some incorrect information in his table.

Can you spot the mistakes?

So we've got age of person, Bilau, Andeep, Sameera, and Dad.

And then we have the length of skull in kilograms.

Hmm, pause here and share with someone what are the mistakes that Andeep has made when recording information in his table?

Thanks for sharing your ideas.

Let's have a look.

Andeep needs to put the ages of the people he was measuring, not their names.

Andeep needs to measure the circumference of the skull, not the length.

Can you see another?

Andeep is measuring using a tape measure.

Its unit of measure is centimeters not kilograms.

And one more.

Andeep needs to add the unit of measurement of age.

Its unit of measure is years.

And now it's time for your final task.

Our question is do bones grow as we get older?

So first of all, I'd like you to follow your plan to carry out your investigation.

Next, record the data you collect.

What will your headings and units of measurements be?

Remember, we don't want to make those mistakes that Andeep made.

So you'll write out your heading and the units.

So pause here while you have a go at this task, carrying out your investigation, remember to follow your plan, and then recording your data, remember your headings and units of measurement.

Enjoy this task and I'll see you when you're finished.

It's great to be back with you.

How did you get on with that task?

Carrying out your investigation and recording your data, you may have measured a different bone to Lucas.

Here's Lucas's example.

So he has the age of the person.

He's got his heading in years.

He's got his unit of measurement.

So we've got the ages 2, 7, 16 and 40.

And then he's got the length of foot.

That's his heading.

And the unit of measurement is centimeters.

So the two-year-old had a 13-centimeter long foot.

The seven-year-old had a 20-centimeter long foot.

The 16-year-old had a 31-centimeter long foot.

And the 40-year-old had a 34-centimeter long foot.

So what can we tell from this data?

Pause here and share with someone.

What does this tell us about whether bones grow as we get older?

Thanks for sharing.

Perhaps you said that, yes, it does show us that bones grow as we get older, as we can see that the length of foot is increasing with age.

And Lucas is asking, did you measure the same bone or a different bone to me?

Pause here and share with someone what might be a different bone that you might like to measure next time.

Thanks for sharing and thanks for all your investigations and data collection and recording.

In our lesson Bone length: plan and do, we've covered the following.

Bone is a living thing.

Our bones change throughout our lives.

Scientists ask questions and then plan how to carry out an investigation to find answers.

Scientists choose the correct equipment to take accurate measurements.

Scientists gather and record data using tables and charts.

Well done everyone for joining in with this lesson.

There was a lot involved today.

We were finding out about bones, we were finding out about asking questions, making plans, using the correct equipment, and then collecting and recording our data.

Oh my, we have been busy.

Well, scientists, I will leave you here for now and I look forward to seeing you at another lesson soon.

Until then, stay curious.