🌟 Story 2: The Hydrothermal Discovery
Descend into the Midnight Abyss!
Read the Adventure!
🔤 Words to Know
Abyss — An extremely deep, seemingly bottomless space.
Proportional reasoning — Using ratios and relationships to solve problems.
Evidence-based analysis — Drawing conclusions supported by specific facts and observations.
A plume of superheated water burst from a crack in the ocean floor — a hydrothermal vent. Minerals billowed out like underwater smoke, and clustered around the vent were bizarre creatures that thrived in extreme heat and pressure.
"Life exists even HERE," said Captain Coral. "Let us use ratios to study these creatures."
They counted: 24 tube worms, 16 vent crabs, and 8 vent shrimp.
"The ratio of tube worms to crabs is 24:16," said Scuba Bob. "I can simplify by dividing both by 8: 3:2."
"Tube worms to shrimp?" asked Captain Coral.
"24:8, which simplifies to 3:1," said Scuba Bob.
"Now find the unit rate," said Captain Coral. "If we counted 48 creatures in 4 hours, how many per hour?"
"48 divided by 4 equals 12 creatures per hour," said Scuba Bob. "That is the unit rate."
Pearl was analyzing the vent ecosystem through a literary lens. "Let us discuss author's craft," she said. "An author's craft is HOW they write — their word choice, sentence structure, and literary devices."
"Consider this description: 'The hydrothermal vent erupted with mineral-rich water, painting the surrounding rock in rust and gold. Life clung to every surface, defying the crushing pressure and searing heat.'"
"The author chose the word 'erupted' instead of 'released' to create a sense of power," said Pearl. "'Painting' is personification. 'Defying' gives the creatures a heroic quality. These word choices create a feeling of awe and admiration."
Captain Coral introduced algebraic expressions. "Let t represent the number of tube worms," he said. "If there are always 2/3 as many crabs as tube worms, how do we express the number of crabs?"
"2t/3 or (2/3)t," said Scuba Bob. "If t = 24, then crabs = 2/3 times 24 = 16. That matches!"
"Write an expression for total creatures if there are t tube worms, (2/3)t crabs, and (1/3)t shrimp."
"t + (2/3)t + (1/3)t = t + t = 2t," said Scuba Bob. "Wait — 2/3 + 1/3 = 3/3 = 1. So it is t + 1t = 2t total creatures."
"If t = 24, total = 2 times 24 = 48. And we counted 48!" said Finn. "Algebra works!"
🧠 Answer the Questions
Read carefully and support your answers with evidence!
Ratio 24:16 simplified?
24:8 simplified?
48 / 4 = ? (unit rate)
Author's craft includes?
(2/3) of 24 = ?
t+(2/3)t+(1/3)t simplified?
If t=24, 2t = ?
Solve: 3x+8=20
Solve: 2(x+3)=16
Evaluate 3x+7, x=4
Mean of 45,38,52,41,38,50?
Median of 38,38,41,45,50,52?
Mode of 38,38,41,45,50,52?
Range: 52-38?
Triangle area: base 6, height 4?
Surface area 8x5x3?
GCF of 36 and 48?
Solve: 2x-5=11
Formal vs informal?
|-8| = ?
Order: -7,3,-2,0,5
Synthesizing sources means?
d=-150m. At m=20, d=?
-6000=-150m. m=?
Theme across all grades?
After G6?