Day One Sub Teacher Guide Day 1 of 2 35-Minute Intervention Plan
Chunk & Conquer: Multisyllabic Decoding
Grade 8 Reading Intervention • Topic: Mariana Trench Exploration • Zero Tech Required
Materials Needed:
Day 1 Student Packet
Pencil & Dry-Erase Board
Substitute Quick-Start: Students in this intervention group often freeze or guess when encountering 3+ syllable words. Keep energy positive: celebrate students who spot chunks, use choral reading (saying words together), and praise decoding effort over instant speed.
35-Minute Lesson Timeline & Scripted Steps
1 Warm-Up: Syllable Hunt (Minutes 0 – 5) 5 mins
Distribute Day 1 Packet. Direct students to the Warm-Up box.
Say: "Every syllable has exactly one vowel sound. Look at word 1: SUBMERSIBLE. Tap out the vowel sounds: sub-mer-si-ble. That's four syllables! Let's write slashes between each chunk: sub / mer / si / ble."
2 Mini-Lesson: The 4-Step "Chunk & Check" Method (Minutes 5 – 13) 8 mins
Write UN-FATH-OM-A-BLE on the board. Model the 4 steps from their reference box:
1. Peel Affixes: Circle un- & -able
2. Spot Vowels: Underline a & o in root
3. Split Consonants: Divide fath / om
4. Blend & Check: Say full word, check meaning
3 Guided & Partner Reading: Descent into the Abyss (Minutes 13 – 25) 12 mins
Read paragraph 1 aloud. Pause at underlined target words. Have all students repeat chorally after chunking.
Partner Routine (Paragraphs 2-3): "Partner A reads paragraph 2 while Partner B follows along. If your partner gets stuck on an underlined word, tap the desk and say 'Chunk it!' Help them split the syllables. Switch roles for paragraph 3."
4 Word Breakdown Grid & Application (Minutes 25 – 33) 8 mins
Students complete the Word Analysis Grid on Page 2 (atmospheric, illumination, catastrophic, hydrothermal ). Circulate around the room, check syllable slashes, and stamp or initial their progress.
5 Wrap-Up & Collect (Minutes 33 – 35) 2 mins
Collect Day 1 Packets or store them in student folders for Day 2. Give whole-class shoutouts for students who decoded difficult 4- and 5-syllable terms!
Early Finishers:
Find three more words in the passage with 3+ syllables (e.g., equilibrium, impenetrable ). Divide them with slashes on the back of the packet.
Struggling Readers:
Use an index card to cover the end of the word so they only see one syllable at a time. Have them whisper each chunk before blending the full word aloud.
Abyss Descent Student Worksheet Day 1 • Reading Intervention
Abyss Descent: Syllable Expedition
Name:
Date:
The 4-Step "Chunk & Check" Decoding Strategy
1. Peel Affixes Circle prefixes (sub-, un- ) and suffixes (-tion, -able ).
2. Spot Vowels Underline vowel sounds. Every syllable has 1 vowel sound!
3. Split Chunks Divide between consonants (VC/CV) or after open vowels (V/CV).
4. Say & Check Blend chunks together. Ask: "Does this sound like a real word?"
A Warm-Up: Syllable Division Practice
Say each word aloud with your teacher. Draw slashes (/) between the syllables, then write the total syllable count.
S U B M E R S I B L E
Syllables:
U N F A T H O M A B L E
Syllables:
B A R O M E T R I C
Syllables:
E X P E D I T I O N
Syllables:
B Reading Passage: Descent into the Abyss (Part 1)
Instructions: Read with a partner. Chunk underlined words!
¶ 1 Seven miles beneath the rolling blue swells of the western Pacific Ocean lies Challenger Deep, the deepest surveyed point on planet Earth. To journey into this sunken canyon, oceanographers must board a specialized, heavy-duty titanium submersible. As the vessel slips beneath the surface, sunlight fades from golden amber to sapphire blue, until at one thousand meters down, the world enters complete, total blackness.
¶ 2 Down here, the water exerts crushing atmospheric pressure—more than one thousand times the pressure felt at sea level. Without thick metal walls engineered to withstand this force, the submersible would suffer a sudden, catastrophic collapse. The pilots rely on powerful searchlights for illumination, slicing through the freezing murk to reveal an alien seascape of silt-covered plateaus and jagged volcanic cliffs.
¶ 3 Despite freezing temperatures and near-total isolation, this hostile abyss is far from dead. Towering mineral chimneys, known as hydrothermal vents, blast superheated, mineral-rich water from deep inside Earth's crust into the icy water. These volcanic chimneys nourish bizarre colonies of deep-sea bacteria, proving that life can thrive in what was once believed to be an unfathomable wasteland.
Mariana Trench Intervention Series • Day 1 Page 1 of 2 (Turn over for Word Breakdown)
Day 1 • Word Attack Laboratory
Target Word Analysis Grid
Use the 4-step method to dissect target words from the passage.
C Multisyllabic Word Dissection
Break down the four underlined words from the text. Follow the headings in each column.
Target Word
Syllables
Chunk Division (Use Slashes)
Meaning in Context
atmospheric Paragraph 2
illumination Paragraph 2
catastrophic Paragraph 2
hydrothermal Paragraph 3
D Quick Check: Applying Your Skills
1. Divide the word below into syllables using slashes (/), then identify the prefix and suffix:
I M P E N E T R A B L E Syllable Count:
Prefix:
Suffix:
2. Read the sentence below. Use context clues and word chunks to determine the meaning of the bold word:
"Scientists were amazed by the luminescence of deep-sea jellyfish shining in the pitch-black trench."
What does luminescence mean based on the root lumin (light)?
Mariana Trench Intervention Series • Day 1 Page 2 of 2 • End of Day 1 Packet
Abyss Descent Answer Key Teacher Answer Key Day 1 of 2
Abyss Descent: Syllable Expedition Key
Grade 8 Reading Intervention • Multisyllabic Decoding Verification
For Substitute Teacher
Keep at teacher desk
Teacher Phonetic Pronunciation Guide
submersible: sub-MER-si-bul (4 syl)
unfathomable: un-FATH-um-uh-bul (5 syl)
atmospheric: at-mus-FEER-ik (4 syl)
catastrophic: kat-uh-STROF-ik (4 syl)
illumination: ih-loo-mih-NAY-shun (5 syl)
hydrothermal: hy-droh-THUR-mul (4 syl)
A Warm-Up Answers: Syllable Division Practice
1. S U B M E R S I B L E 4 Syllables
sub / mer / si / ble
2. U N F A T H O M A B L E 5 Syllables
un / fath / om / a / ble
3. B A R O M E T R I C 4 Syllables
bar / o / met / ric
4. E X P E D I T I O N 4 Syllables
ex / pe / di / tion
C Target Word Analysis Grid Key
Target Word
Syllables
Chunk Division
Meaning in Context
atmospheric
4
at / mos / pher / ic
Relating to the heavy weight/pressure of air or deep water.
illumination
5
il / lu / mi / na / tion
Light or lighting that brightens darkness.
catastrophic
4
cat / a / stroph / ic
Disastrous, extreme, or causing total destruction.
hydrothermal
4
hy / dro / ther / mal
Hot water heated by volcanic energy (hydro = water, therm = heat).
D Quick Check Answers
1. Word Division & Affixes: IMPENETRABLE
Division: im / pen / e / tra / ble (5 syllables)
Prefix: im- (not/cannot) • Suffix: -able (capable of)
2. Vocabulary in Context: Luminescence
Sample Correct Response: Light produced by a living organism without intense heat; glowing or shining in darkness.
Accept any response mentioning "glowing," "light," or "shining in the dark."
Mariana Trench Intervention Series • Day 1 Teacher Key Grade 8 Intervention Reference
Day Two Sub Teacher Guide Day 2 of 2 35-Minute Intervention Plan
Deep Sea Detectives: Comprehension & Context
Grade 8 Reading Intervention • Topic: Hadal Zone Creatures • Zero Tech Required
Materials Needed:
Day 2 Student Packet
Pencil & Dry-Erase Board
Substitute Quick-Start: Today connects decoding to deep comprehension. Students will read Part 2 about deep-sea monsters (anglerfish, giant amphipods, snailfish) and answer text-dependent questions. Remind them to re-read and cite specific paragraph numbers!
35-Minute Lesson Timeline & Scripted Steps
1 Warm-Up: Syllable Speed-Split (Minutes 0 – 5) 5 mins
Distribute Day 2 Packets. Direct students to the Warm-Up box.
Say: "Yesterday we conquered long words by chunking. Look at word 1: BIOLUMINESCENCE. That looks terrifying, but let's count vowel sounds: bio-lu-mi-nes-cence! Six syllables! Let's slice it: bi / o / lu / mi / nes / cence. You can read any word on Earth when you break it into chunks!"
2 Read Passage: "Creatures of the Hadal Zone" (Minutes 5 – 15) 10 mins
Teacher Read & Model (Paragraph 1): Read paragraph 1 aloud. When you reach invertebrates , pause and ask the class to say it chorally.
Paired Reading (Paragraphs 2-3): "Partner A reads Paragraph 2 (Ghostly Predators). Partner B tracks and checks underlined words. Switch for Paragraph 3 (The Chemistry of Life). If your partner hesitates, help them spot prefixes or vowels!"
3 Comprehension & Context Clues (Minutes 15 – 28) 13 mins
Direct students to Page 2. Explain the expectations for text-dependent questions:
Questions 1–3: Target vocabulary in context and key details. Require students to write the paragraph number where they found proof.
Question 4 (Short Response): Students write 2-3 complete sentences explaining how deep-sea animals survive without sunlight. Walk the room and assist students with sentence starters.
4 Exit Ticket: Syllable Showdown (Minutes 28 – 33) 5 mins
Students complete the final Exit Ticket box at the bottom of Page 2 independently: dividing the word EXTRAORDINARY and explaining what it reveals about deep-sea survival.
5 Wrap-Up & Teacher Summary (Minutes 33 – 35) 2 mins
Collect all packets. Leave a note on the regular teacher's desk with names of students who showed great decoding effort!
Sentence Starters for Q4:
Write on the board: "Creatures in the Hadal Zone survive without sunlight because..." and "According to paragraph 3, they get energy from..."
Active Engagement Tip:
If attention flags, use a call-and-response: say "Chunk it!" and have students respond "Check it!" while slapping their desks in rhythm.
Abyss Creatures Student Worksheet Day 2 • Reading Intervention
Abyss Creatures: Comprehension & Clues
Name:
Date:
Decoding Rule: Peel off affixes • Spot vowel sounds • Split between consonants • Check meaning
Chunk & Check
A Warm-Up: Syllable Speed-Split
Divide each word with slashes (/), then write the total number of syllables.
B I O L U M I N E S C E N C E
Syllables:
I N V E R T E B R A T E S
Syllables:
T R A N S L U C E N T
Syllables:
C H E M O S Y N T H E S I S
Syllables:
B Reading Passage: Creatures of the Hadal Zone (Part 2)
Instructions: Read with your partner. Chunk underlined words!
¶ 1 The Hadal Zone, named after Hades, the ancient realm of the underworld, begins six thousand meters below the waves. For generations, marine biologists believed this sunless trench was completely devoid of animal life. Modern robotic probes, however, captured stunning footage of thriving invertebrates, including giant shrimp-like amphipods and pale, ghostly snailfish gliding smoothly through water so deep that human lungs would be flattened instantly.
¶ 2 To endure the extreme pressure, the Mariana snailfish developed gelatinous tissues and flexible, cartilage-based skeletons rather than rigid, brittle bones. Because sunlight never penetrates this depth, these creatures have lost all skin pigmentation. Their flesh is eerily translucent, allowing cameras to peer directly into their beating hearts and stomachs. Higher up the trench walls, predatory anglerfish generate their own living light through bioluminescence, dangling a glowing bacterial lure in front of razor-sharp jaws to hypnotize unsuspecting prey.
¶ 3 Because solar rays cannot reach the sea floor, standard plant photosynthesis is impossible. Instead, specialized volcanic bacteria thrive by performing chemosynthesis, converting toxic hydrogen sulfide gas from hydrothermal vents into nutritious sugars. Meanwhile, scavenger crabs crawl across the seabed feeding on the decomposition of dead plankton and sunken whale carcasses drifting down from the surface. Through these extraordinary evolutionary adaptations, the deepest trench on Earth sustains a rich and self-contained community of life.
Mariana Trench Intervention Series • Day 2 Page 1 of 2 (Turn over for Comprehension Questions)
Day 2 • Evidence & Analysis
Text-Dependent Comprehension
Answer each question using facts and vocabulary from Part 2.
1. Vocabulary in Context (Paragraph 3) Morphology
In paragraph 3, the root chemo means "chemical" and synthesis means "putting together / making." What is chemosynthesis ?
A The process of plants making food using sunlight
B The process of bacteria making food from volcanic chemicals
C The sudden collapse of a submersible hull under water
D The hunting behavior of glowing deep-sea anglerfish
2. Key Idea & Evidence (Paragraph 2) Text Proof
According to paragraph 2, how does the Mariana snailfish's body structure allow it to survive crushing pressure that would flatten a human?
3. Inference & Context Clues (Paragraph 2) Inference
The text describes the snailfish's skin as translucent because cameras can see directly into its beating heart. In your own words, what does translucent mean?
4. Written Response: Deep-Sea Energy Cycle 2–3 Sentences
How do animals in the Hadal Zone obtain energy without sunlight? Use at least one of these words in your answer: chemosynthesis , hydrothermal , or decomposition .
Exit Ticket: Decoding Challenge
Quick Check
Divide the word EXTRAORDINARY using slashes (/), count syllables, and circle the prefix:
E X T R A O R D I N A R Y
Syllable Count:
Prefix:
Mariana Trench Intervention Series • Day 2 Page 2 of 2 • End of Day 2 Packet
Abyss Creatures Answer Key Teacher Answer Key Day 2 of 2
Abyss Creatures: Comprehension Key
Grade 8 Reading Intervention • Comprehension, Evidence, & Syllable Verification
For Substitute Teacher
Keep at teacher desk
Day 2 Phonetic Pronunciation Guide
bioluminescence: by-oh-loo-mih-NES-ens (6 syl)
invertebrates: in-VER-tuh-brayts (4 syl)
translucent: trans-LOO-sent (3 syl)
chemosynthesis: kee-moh-SIN-thuh-sis (5 syl)
gelatinous: jeh-LAT-ih-nus (4 syl)
extraordinary: ek-stror-dih-NAIR-ee (5 syl)
A Warm-Up Answers: Syllable Speed-Split
1. B I O L U M I N E S C E N C E 6 Syllables
bi / o / lu / mi / nes / cence
2. I N V E R T E B R A T E S 4 Syllables
in / ver / te / brates
3. T R A N S L U C E N T 3 Syllables
trans / lu / cent
4. C H E M O S Y N T H E S I S 5 Syllables
chem / o / syn / the / sis
C Comprehension Questions Answer Key
Question 1: Vocabulary in Context
Correct Answer: B — The process of bacteria making food from volcanic chemicals.
Teacher note: Reiterate that chemo = chemical and synthesis = making. Option A describes photosynthesis (photo = light).
Question 2: Key Idea & Text Evidence (Paragraph 2)
Exemplary Response: The snailfish has gelatinous (jelly-like) tissues and flexible cartilage-based skeletons instead of hard, rigid bones that would shatter under intense water pressure.
Accept either mention of "gelatinous tissues" or "flexible cartilage skeletons."
Question 3: Inference & Context Clues (Paragraph 2)
Exemplary Response: Translucent means see-through, semi-transparent, or clear enough that light can pass through and inner organs (heart, stomach) can be seen.
Accept "see-through," "clear," or "transparent."
Question 4: Written Response Scoring Rubric & Exemplar
Exemplary Response (2-3 Sentences): "Hadal Zone animals obtain energy without sunlight through chemosynthesis, where volcanic bacteria convert gases from hydrothermal vents into sugars. Additionally, scavengers survive by feeding on the decomposition of dead organic matter falling from the upper ocean."
Must include 1 required vocabulary word correctly used and explain either volcanic bacteria (chemosynthesis) or falling debris (decomposition).
D Exit Ticket Key: Syllable Challenge
E X T R A O R D I N A R Y 5 Syllables
ex / traor / di / nar / y (or ex / tra / or / di / nar / y)
Prefix: extra- (meaning "beyond" or "outside of" ordinary).
Mariana Trench Intervention Series • Day 2 Teacher Key Grade 8 Intervention Reference
