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Mr. A's Writing Tools
writingtools.org
Writing Assignment
Coral Reefs in Crisis
Standard: Determine two or more central ideas in a text and analyze their development over the course of the text; provide an objective summary of the text.
What to Do
Assignment OverviewCoral reefs are often called the "rainforests of the sea" because of the Coral Reefs: Beauty in Danger
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Coral reefs cover less than 1% of the ocean floor, yet they support approximately 25% of all known marine species. These underwater ecosystems, built by tiny animals called coral polyps over thousands of years, serve as nurseries for young fish, hunting grounds for predators, and shelters for countless organisms. Scientists estimate that coral reefs provide food and income for about 500 million people worldwide, particularly in developing coastal nations.
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Despite their importance, coral reefs are disappearing at an alarming rate. Scientists estimate that the world has already lost about half of its coral reef cover since the 1950s. The primary threat is rising ocean temperatures caused by climate change. When water gets too warm, corals expel the colorful algae living in their tissues, turning white in a process called bleaching. Without these algae, corals lose their main food source and often die.
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Ocean acidification poses another serious threat. As the ocean absorbs carbon dioxide from the atmosphere, seawater becomes more acidic. This acidity makes it harder for corals to build their calcium carbonate skeletons, weakening the entire reef structure. Combined with pollution from agricultural runoff and damage from destructive fishing practices, these stressors are pushing many reefs past the point of recovery.
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Conservation efforts offer some hope. Marine protected areas where fishing is restricted have shown that damaged reefs can partially recover when given time. Scientists are experimenting with growing heat-resistant coral varieties in laboratories and transplanting them onto damaged reefs. Some communities have developed sustainable tourism programs that fund reef protection while providing local jobs. However, researchers stress that without addressing climate change, even the best local conservation efforts will not be enough to save the world's coral reefs. Vocabulary Bank
Writing Steps
1
Identify Topic and Key Details
List 4-6 key details from the passage. Try to find details that relate to DIFFERENT aspects of the topic:
- Detail 1: ... - Detail 2: ... - Detail 3: ... - Detail 4: ... Then group them: Which details seem to go together? Do you notice different "threads" or "themes" in the passage? Read the passage carefully. As you read, look for key details - the most important facts, events, or ideas the author includes.
The passage is about: the importance of coral reefs and the threats they face In Grade 7, we look for MORE THAN ONE central idea. Start by finding the key details that might point to DIFFERENT central ideas in the text.
Scoring Guidance — Step 1
Look for:
Main Idea Detail / Evidence 1 Detail / Evidence 2 Detail / Evidence 3
2
Determine First Central Idea
State your FIRST central idea:
1. Central Idea #1: Write one clear sentence stating the first central idea 2. Supporting details: Which 2-3 details from the passage support this idea? 3. Where it appears: Where in the passage does this idea start to develop? Check your statement: - Is it a complete thought (not just a topic)? - Is it specific to THIS passage? - Can you point to details that support it? A central idea is the author's main message - what they want you to understand. It is NOT just the topic.
- Topic = what the text is about (a word or phrase) - Central idea = the author's MESSAGE about the topic (a complete thought) Look at one group of your details. What central idea do they support? What are the author's central messages about coral reefs and their future?
Scoring Guidance — Step 2
Look for:
Your central idea should be ONE complete sentence
It should be specific to THIS passage, not a general truth
The central idea is the author's MESSAGE, not just the subject
Sentence Starters
In the text, the author shows that ___.
The author writes, "___," which shows ___.
This is important because ___.
Overall, the text shows that ___.
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Determine Second Central Idea
State your SECOND central idea:
1. Central Idea #2: Write one clear sentence stating a different central idea 2. Supporting details: Which details from the passage support THIS idea? 3. How it relates to your first: Does this idea build on, contrast with, or complement your first central idea? Make sure this is genuinely DIFFERENT from your first central idea - not just a rewording. Texts often have MORE THAN ONE central idea. The author may weave together multiple messages.
Now find a SECOND central idea - one that is DIFFERENT from your first. Look at the details you have not used yet, or look for a different thread running through the passage. The second central idea might: - Address a different aspect of the topic - Present a related but distinct message - Build on or contrast with the first central idea
Scoring Guidance — Step 3
Look for:
Look for a different thread or theme in the passage
What ELSE is the author trying to tell you?
Sometimes the second idea shows a different side of the topic
Sentence Starters
In the text, the author shows that ___.
The author writes, "___," which shows ___.
This is important because ___.
Overall, the text shows that ___.
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Analyze How Ideas Develop
Write 3-4 sentences analyzing how the central ideas develop:
1. How does the author introduce and build the FIRST central idea? 2. How does the author introduce and build the SECOND central idea? 3. Do the two ideas interact, overlap, or build on each other? How? Use language like: - "The author develops this idea by..." - "This idea first appears when... and then grows through..." - "The two ideas connect because..." Central ideas do not just appear - they DEVELOP through the text. The author builds them piece by piece.
Now analyze HOW your two central ideas develop over the course of the passage: - Where does each idea first appear? - How does the author develop each idea with details, examples, or events? - Do the ideas interact? Does one lead to or build on the other?
Scoring Guidance — Step 4
Look for:
Track how each idea grows from beginning to end
Look for where the author adds details, examples, or evidence
Do the two ideas ever overlap or influence each other?
Sentence Starters
In the text, the author shows that ___.
The author writes, "___," which shows ___.
This is important because ___.
Overall, the text shows that ___.
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Write Objective Summary
Write an objective summary (5-7 sentences) that:
1. Introduces what the passage is about 2. States both central ideas 3. Includes key supporting details for each 4. Shows how the ideas develop or connect 5. Uses your own words - do NOT copy the passage Opinion words to AVOID: - I think, I believe, I feel, in my opinion - Interesting, boring, good, bad, amazing, terrible - You should, everyone needs to, people must - Unfortunately, thankfully, surprisingly, luckily Now write an objective summary of the passage that includes both central ideas.
An objective summary: - States the central ideas - Includes key supporting details - Uses YOUR OWN WORDS - Contains NO personal opinions or judgments OBJECTIVE means no "I think," "I believe," "interesting," "unfortunately," or any opinion words.
Scoring Guidance — Step 5
Look for:
Start by introducing the passage's topic
Include BOTH central ideas
Add key supporting details
Keep it factual - just report what the text says
Sentence Starters
In the text, the author shows that ___.
The author writes, "___," which shows ___.
This is important because ___.
Overall, the text shows that ___.
Self-Check Rubric
Before You Turn InI completed the planning step
I completed Step 2: Determine First Central Idea
I completed Step 3: Determine Second Central Idea
I completed Step 4: Analyze How Ideas Develop
I completed Step 5: Write Objective Summary
I re-read my writing and fixed any spelling or grammar mistakes
I am proud of this work
ReflectionWhat was the hardest part of this assignment? What would you do differently next time? Want the AI-coached version of this assignment?
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writingtools.org/printables/centralidea7_coral_reefs_v1
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