Lesson video

Hi, my name is Ms. Boyle and I am going to be teaching you your reading lesson today where we will be building our understanding of "Curious Creatures Glowing In The Dark," and we will be retrieving key information about them.

For this lesson, you need to be listening and looking carefully.

You need your thinking brain, and there will also be some tasks where you need somebody to talk to.

I'm really excited so let's begin.

The learning outcome for today's lesson is, I can retrieve information from a non-fiction text to answer questions.

Here are the keywords in today's lesson.

Let's practise saying them My turn, your turn.

Information.

Retrieve.

Bioluminescence.

Biofluorescence.

Well done.

Let's take a look at their definitions.

Information refers to facts learned about someone or something.

In reading, retrieve means to find information within the text.

Bioluminescence is the production and emission of light by a living organism caused by a chemical reaction within it.

Bio fluorescence is the production and emission of light by a living organism as a result of absorbing ultraviolet light.

There are two parts to today's lesson.

In the first part, we will look at strategies for building understanding.

And in the second part, we will be retrieving key information from our text, "Curious Creatures Glowing In The Dark." So let's begin with strategies for building understanding.

What do we know about "Curious Creatures Glowing In The Dark?" Let's have a look.

It is a nonfiction text about creatures that glow in the dark.

The purpose of a nonfiction text is to inform, explain, or provide factual information.

The layout is intended to help its audience, children, to learn interesting facts.

Some creatures can produce and emit light using bioluminescence or bio fluorescence.

So how can we build our understanding of a text? It is important to familiarise yourself with the layout of a text.

Here are two pages from our book.

Each double page spread focuses on one topic or animal.

Subheadings can guide you to the information you are looking for.

Fact boxes highlight key information.

The illustrations and captions support understanding.

The layout of a nonfiction text means we don't have to read the whole book from start to finish.

We can go straight to a specific section that we want to learn more about.

Let's check your understanding.

True or false? I need to read the entire text again to find a specific piece of information.

Pause the video and answer now.

That is false.

Well done.

Now it's time to justify your answer.

A.

I can flick through the book to find the relevant page and information I am looking for.

B, I can remember off by heart which page the information I need is on.

Pause the video and answer now.

The answer is A.

Well done.

You can use the features in a non-fiction text to flick through and find the relevant page and information you are looking for.

How do we retrieve information from the text? Skimming over an extract and scanning for keywords from the question can help us find the information we are looking for.

Sometimes the answer is in that sentence and sometimes we need to read the sentence before or after.

Skimming means to read quickly to get a general overview.

Scanning means the search for something specific without rereading the entire text again.

Let's check your understanding of retrieval skills.

True or false? Skimming and scanning is a useful strategy for retrieving information.

Pause the video and answer now.

That is true.

Well done.

It's time to justify your answer.

A, it helps me find the information I am looking for quickly.

B, you never need to reread a whole text.

Pause the video and answer now.

The answer is A.

Well done.

It helps you find the information you are looking for quickly.

Sometimes it's really important to reread a whole text to deepen your understanding, but you can retrieve specific information more quickly using skimming and scanning.

It's time for your first task.

How do these strategies help to build your understanding of a text? Familiarising yourself with the layout of the text and skimming and scanning for keywords.

Your sentence starter is, these strategies help me to.

Pause the video and discuss with your partner now.

Let's take a look at the answers you might have given.

For familiarising yourself with the layout of the text, you might have said, "This helps me to find the information more effectively." You may have also said, "I can spend more time absorbing the information provided and discussing it." For skimming and scanning for information, you might have said, "This strategy helps me find the information I am looking for more quickly" or "I don't need to read the whole text again, but I can search for key words instead." Well done if you answered similarly.

It is now time for the second part of our lesson where we will be retrieving key information from the text.

We are going to build our understanding of "Creatures That Glow In The Dark" by retrieving key information from the text.

Let's remind ourselves of some important strategies that are helpful when reading nonfiction texts.

Familiarise yourself with the layout of the book.

Use subheadings and fact boxes to find key information.

Skim and scan the text when looking for specific information and use the illustrations and captions to support your understanding of what you read.

These are our strategies for retrieving information.

Read the question and underline the keywords.

Skim and scan the text to search for the keywords.

Read the sentence and check it answers the question.

If it doesn't answer the question, read the sentence before or after to find the answer.

You might need to search for a type of word, for example, a name with a capital letter, an adjective or a job.

Let's take a look at an extract from the text and how we can use our retrieval strategies to answer a question about it.

Page 10 gives us a summary explanation of bioluminescence.

What is bioluminescence? The word bioluminescent comes from bio, meaning life, and lumen, meaning light.

Bioluminescent animals make sparkles, flickers, and flashes of light with chemical reactions inside their bodies.

A bit like cracking a glow stick.

Chemicals called luciferin and luciferase mixed together with oxygen to produce the glow and it reveals itself in many different ways.

The question we are going to answer is, what two words does the word, bioluminescent, come from? First, I need to identify the key words in the question.

Two words lets me know the amount of words I need to retrieve as my answer.

Bioluminescent come from are key words that I can search for in the text.

If I start to skim the extract and scan for those key words, I can spot the words, bioluminescent comes from in the first sentence, so then I need to read that sentence carefully and see if it contains my answer.

The word, bioluminescent, comes from bio, meaning life, and lumen, meaning light.

My answers are bio and lumen.

You may also notice that important words are in bold to highlight them for you.

This is a technique often used to highlight key words in a non-fiction text.

It's now time to apply your retrieval strategies to check your understanding.

Using the same extract from the text, answer the following question using your strategies for retrieval.

The question is, what are the names of the two chemicals that mix together with oxygen to produce the glow? Pause the video and answer now.

Let's take a look at the answer and how to retrieve it.

First we identify the keywords in the question.

Names lets us know that we are searching for nouns.

Two chemicals lets us know an amount of words we are searching for and produce the glow are key words.

If you skim and scan the text for the keywords, you'll spot the words, chemicals, and produce the glow in the same sentence.

Chemicals called luciferin and luciferase mixed together with oxygen to produce the glow.

The answer is Luciferin and luciferase.

You will have noticed that those words were also in bold.

Well done.

We are now going to read pages 10 and 11 about bioluminescence.

"What is bioluminescence? The word bioluminescence comes from bio, meaning life, and lumen, meaning light.

Bioluminescent animals make sparkles, flickers, and flashes of light with chemical reactions inside their bodies.

A bit like cracking a glow stick.

Chemicals called luciferin and luciferase mixed together with oxygen to produce the glow and it reveals itself in many different ways.

Some creatures have glowing light organs called photophores.

The small body of the firefly squid is covered in tiny glowing photophores.

It uses its bioluminescence to signal to others and to make itself look bigger than it really is.

While others ooze bioluminescent slime.

A New Zealand earthworm called Octochaetus multiporus dribbles bioluminescent, orange goo when it is disturbed.

An earthworm from the American south, diplocardia longa, spews glowing blue gunk to startle its predators.

Some creatures borrow their bioluminescence from glow in the dark bacteria which they carry around.

Flashlight fish have a glowing torch of bioluminescence bacteria under each eye, which they switch on and off by blinking.

They use their torch for finding food and distracting predators with a game of blink and run." Let's check your understanding.

What did we learn about on pages 10 and 11 of "Curious Creatures Glowing In The Dark?" A, that creatures are curious and they glow.

B, that humans use light to survive, or C, what bioluminescence is and how creatures produce it.

Pause the video and answer now.

The answer is C.

Well done.

Pages 10 and 11 taught us all about what bioluminescence is and how creatures produce it.

It's now time for a task.

Look at pages 10 and 11.

Use your retrieval strategies to find the answers.

A, what is the name of the glowing light organs some creatures have? B, Where does the slime oozing Octochaetus multiporus earthworm come from? The word, where, lets you know that you are looking for the name of a place so you can scan for a capital letter and C, what do some creatures borrow their bioluminescence from? Pause the video and answer now.

Let's take a look at the answers.

For A, the name of the glowing light organs some creatures have is photophores.

For B, the slime oozing Octochaetus multiporus earthworm comes from New Zealand, and for C, some creatures borrow their bioluminescence from glow in the dark bacteria.

Well done.

We are now going to read pages 26 and 27 about bio fluorescence.

"What is bio fluorescence? Unlike bioluminescent creatures, biofluorescent animals only glow when they absorb invisible ultraviolet light from the sun or the moon or a special torch.

Molecules inside the animal transform the ultraviolet delight into brilliant shades of blue, green, yellow, or red.

You might have glow in the dark stars on your bedroom wall that work in a similar way, although they glow a little longer after the lights have been turned out.

A scorpion is a good example of this in action.

Its outer shell, called an exoskeleton, absorbs the invisible light then gives off a visible glow.

Here's how it works.

Ultraviolet light reaches the surface of the scorpion's exoskeleton.

Molecules in the exoskeleton absorb the ultraviolet light.

The molecules re-emit the light in a different colour millionths of a second later.

This is the glow.

When the ultraviolet light is gone, the scorpion stops glowing.

Most land animals have no need to make light.

They exist in a sunlit world, but glowing is still a useful trick, especially for nocturnal animals and creatures that live in the dim light of the forest.

These animals don't need a special torch to see the biofluorescent glow.

Their senses aren't the same as ours.

They see colours of light that human eyes can't detect and the world looks very different." Let's check your understanding of what we've read.

What did we learn about on pages 26 and 27 of "Curious Creatures Glowing In The Dark?" A, how scientists study glowing creatures.

B, what bio fluorescence is and how creatures produce it, or C, how creatures use their lights to communicate.

Pause the video and answer now.

The answer is B.

We learned about what bio fluorescence is and how creatures produce it.

Well done.

It's now time for your final task.

Look at pages 26 and 27.

Use your retrieval strategies to find the answers.

A, what do biofluorescent creatures absorb from the sun or moon to produce their glow? And B, number the following, one to three to explain how a scorpion produces biofluorescent light Molecules in the exoskeleton absorb the ultraviolet light.

Ultraviolet light reaches the surface of the scorpion's exoskeleton.

The molecules re-emit the light in a different colour.

Pause the video and answer now.

Let's take a look at the answers.

For A, biofluorescent, creatures absorb invisible ultraviolet light from the sun or moon to produce their glow.

For B, how does a scorpion produce biofluorescent light? First, ultraviolet light reaches the surface of the scorpion's exoskeleton.

Then molecules in the exoskeleton absorb the ultraviolet light and finally, the molecules re-emit the light in a different colour.

Well done for applying your retrieval strategies so well.

We've now come to the end of our lesson, so let's look at a summary together.

The layout of a text is designed to help you to navigate and understand it.

Skimming and scanning is a way to retrieve information accurately and quickly from a text.

Searching for keywords helps you to find information you are looking for, and bioluminescence and bio fluorescence are two different ways in which creatures produce their glow.

Well done for all of your hard work and learning in today's lesson.

I hope you have really enjoyed learning all about how creatures glow in the dark.