Lesson 9 Vocab Deep dive

Lesson 9 Vocab Deep dive

Use reference materials to clarify the precise meanings of key words and phrases in content-rich texts.

“When the left atrium contracts, or squeezes, the mitral valve opens; this lets blood go through to the left ventricle” (12).

Read the following passage to yourself from page 12

Open Ended

When you are reading a piece of text like this, how can you decode(figure out) the meaning of words such as atrium, mitral valve, and ventricle?”

During this lesson...

You will learn more ways to resolve, or figure out, the meanings of unknown words, especially specific words that relate to the heart.

Open your ELA notebooks to the vocabulary section in the back of your notebook and prepare to copy down this chart

Copy down this chart in the vocabulary section of your notebook

Example:

• ON PAGE 28 “You have completed a trip through one part, or circuit, of the body’s circulatory system” (28).

• The author knew the reader might have trouble with the word circuit and explained it in the text by saying “one part.”

• When the meaning of words is clarified by the text around them, this text is called the context. The context can help readers understand the meaning of the word.!

Synonyms/Antonyms

• Authors will often use a synonym or antonym of the unknown word to avoid repetition, which gives the reader clues in text

• “When the left atrium contracts, or squeezes…” is an example of this. The author knew contracts might be difficult for the reader to understand, so she provided a synonym—squeezes.

Illustrations/Sidebars:

• The illustrator draws diagrams, charts, or pictures to help the reader make sense of complex, or difficult, ideas in the text

• 
  

Open Ended

How does the diagram on page 12 help the reader understand the mitral valve?

Glossary:

• A glossary is a built-in dictionary for words that are in the text the reader might have trouble accessing. Explain that these words are carefully selected to support the text.

Word Parts

• Readers can use any familiar parts of the word, such as the root, prefix, or suffix, to help understand the word

In your Circulatory story go to page 10

• 
  

Find the definitions for the following terms:

• Atrium

• Ventricle

• Valve

• Atrium – the upper chambers of the heart. (I can tell by the illustration on page 10.)

• Ventricle – the bottom chambers of the heart. (I can tell by the illustration on page 10.)

• Valve – something that opens when the left atrium contracts and then closes. (glossary) The author uses the metaphor “one-way doors.” (text)

Open Ended

Exit Ticket: write one way strategies you can use to define unknown words