1. INTRODUCING, ILLUSTRATING, AND ELABORATING ON IDEAS
Rare Animals: Singapore freshwater crab
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2. Learning goal:
Analyze in detail how a key individual, event, or idea is introduced, illustrated, and elaborated in a text (e.g., through examples or anecdotes).

3. These elements help the reader to determine the of the text.
The most important occurrences in the text
A thought or belief supported throughout the text
The people whose viewpoints are being expressed in the text, or the thing that is being discussed (e.g., an animal or plant)
Individual
“Who”
Event
“What”
Idea
“Why”
These elements help the reader to determine the of the text.

4. INTRODUCE ILLUSTRATE ELABORATE
Provide the reader with a main idea statement that informs the reader of the topic and point that you will make.
Build the reader’s knowledge about the individual, event, or idea through evidence, examples, or anecdotes.
Expand on ideas to help the reader make connections among the text.
This can be done on a section-by-section, paragraph-by-paragraph, or whole-text basis.

5. Setting a purpose
As we read, let’s identify the “big idea” of the passage.
Singapore is home to one of the rarest crabs in the world. It is so rare that you can consider yourself extremely lucky if you ever happen to see one. Locals call this decapod crustacean the Singapore Freshwater Crab (Johora singaporensis). The Singapore Freshwater Crab is one of three species endemic to Singapore that are found nowhere else on the planet.
This crab is very picky in choosing its habitat, and it can only be found in clean and clear water. The flow of the water must be swift. It must be rich in oxygen and must have a certain pH level. In the absence of these qualities, you won’t see any of these crabs. Perhaps this is the reason why they are considered rare.

6. Next Step:
Chunk the text into sections. As you read each section, make note of key details that support the big idea.
BIG IDEA: The Singapore Freshwater Crab is one of the rarest crabs in the world.
SECTION 1
(Paragraphs 1-2)
SECTION 2
(Paragraphs 3-6)
SECTION 3
(Paragraphs 7-10)
it can only be found in clean and clear water
the water must flow swiftly
the water must be rich in oxygen and have a certain pH level

7. Partner Work: Part 1: PART 2:
With your partner, continue reading the text and identifying key details from the section that support the Big Idea.
BIG IDEA: The Singapore Freshwater Crab is one of the rarest crabs in the world.
SECTION 1
(Paragraphs 1-2)
SECTION 2
(Paragraphs 3-6)
SECTION 3
(Paragraphs 7-10)
it can only be found in clean and clear water
the water must flow swiftly
the water must be rich in oxygen and have a certain pH level
PART 2:
Now that you have identified key details, discuss with your partner HOW the information you found supports the Big Idea.

8. Independent practice:
Answer the following text- dependent question:
How does the author elaborate on the idea that the Singapore Freshwater Crab is “one of the rarest crabs in the world”? Use evidence from the text to support your response.