What's the Main Idea?
In movies and books, ghosts are usually shown as scary spirits that haunt old houses. However, most friendly ghost stories show them as helpful characters who protect people from danger.
What is the main idea of this passage?
A. Friendly ghost stories show ghosts as helpful protectors rather than scary monsters.
B. Ghosts are only found in old, broken-down houses.
C. Ghosts are always terrifying monsters that try to hurt everyone.
D. Movies are much scarier than books.
A. Friendly ghost stories show ghosts as helpful protectors rather than scary monsters.
An NFL quarterback must process massive amounts of visual information in less than three seconds to avoid being tackled. They have to instantly read the defensive players' movements, spot which teammate is open, and decide exactly where to throw the ball before the defense crashes through the offensive line.
The main idea is that quarterbacks must make split-second visual decisions to avoid being tackled. Which detail best supports this?
A. Quarterbacks must instantly read defender movements and spot open teammates before throwing.
B. Defensive players try to crash through the offensive line on every single play.
C. NFL games are highly competitive and require players to train for many hours.
D. Tackles can cause severe injuries if the quarterback does not see the defender coming.
A. Quarterbacks must instantly read defender movements and spot open teammates before throwing.
"This term describes a complete sentence that states the most important point, message, or argument the author wants the reader to understand about a subject."
What is this term?
A. Main idea
B. Topic
C. Summary
D. Context clue
A. Main idea
(1) Extreme weather camps are becoming highly popular summer destinations for middle school students. (2) At these camps, teenagers learn how to track tornadoes, measure hurricane winds, and survive intense blizzards. (3) Summer camps are also a great place to make lifelong friends and eat roasted marshmallows. (4) By using advanced weather tools, students leave the camp with a strong understanding of meteorology.
Which sentence is the impostor because it is irrelevant to the paragraph's main idea?
A. Sentence 1
B. Sentence 2
C. Sentence 3
D. Sentence 4
C. Sentence 3
The Claim: Playing multiplayer video games can help teenagers develop essential teamwork and social skills.
Which of the following sentences provides the best scientific evidence to support this claim?
A. Many popular multiplayer video games can be purchased online and downloaded directly to a console in under ten minutes.
B. Studies show that gamers who coordinate strategies in online teams demonstrate higher levels of communication and cooperation in school group projects.
C. Some professional video game players earn millions of dollars a year by competing in global esports tournaments.
D. Parents often worry that spending too many hours looking at a screen can cause teenagers to experience eye strain or headaches.
B. Studies show that gamers who coordinate strategies in online teams demonstrate higher levels of communication and cooperation in school group projects.
The Great Wall of China was originally built by ancient emperors to protect their territory from invading northern armies. Construction workers used local stone, brick, and packed earth to create this massive barrier that stretched across thousands of miles.
What is the main idea of this passage?
A. Invading northern armies were very dangerous in ancient history.
B. Ancient workers used bricks and stone to construct buildings.
C. The Great Wall of China was built as a massive barrier to protect the country from invaders.
D. The Great Wall stretches across thousands of miles of sandy desert.
C. The Great Wall of China was built as a massive barrier to protect the country from invaders.
Sea oats are vital plants that protect fragile coastal beaches from severe storm damage. Their massive, tangled root networks grow up to forty feet deep, locking loose sand in place so strong winds and waves cannot wash the dunes away.
The main idea is that sea oats protect beaches from storm damage. Which detail best supports this?
A. Severe storms cause extreme damage to coastal beaches every year.
B. Sea oats have massive, forty-foot root networks that lock sand dunes in place.
C. Strong ocean winds and giant waves easily wash away normal plants.
D. Coastal beaches are fragile environments that require human protection.
B. Sea oats have massive, forty-foot root networks that lock sand dunes in place.
"When an author writes a paragraph, this term refers to the broad, general subject or umbrella category that the text is about, usually stated in just one or two words."
What is this term?
A. Supporting detail
B. Main idea
C. Topic
D. Inference
(1) Designing rollercoaster loops requires a deep understanding of physics and engineering. (2) Engineers must carefully calculate the kinetic energy and speed needed to safely push a coaster car upside down. (3) Designers also use teardrop-shaped loops instead of perfect circles to reduce the intense gravitational forces on the human body. (4) Most theme parks sell expensive fast-passes to help visitors skip long lines.
Which sentence is the impostor because it is irrelevant to the paragraph's main idea?
A. Sentence 1
B. Sentence 2
C. Sentence 3
D. Sentence 4
D. Sentence 4
The Claim: Providing students with a daily school recess significantly improves their academic performance in the classroom.
Which of the following sentences provides the best evidence to support this claim?
A. Most middle school students prefer playing outdoor basketball or soccer during recess rather than sitting on benches.
B. Playing outside on a playground helps children absorb Vitamin D from natural sunlight, which strengthens their bones.
C. Many school districts have shortened recess times over the last ten years to allocate more hours to core classes.
D. Research shows that children who get a 20-minute physical break during the day are more focused and score higher on reading and math tests.
D. Research shows that children who get a 20-minute physical break during the day are more focused and score higher on reading and math tests.
The Venus flytrap is a unique predatory plant that survives in poor soil by trapping and digesting insects. When an unsuspecting bug crawls onto its modified leaves and touches the tiny trigger hairs, the trap snaps shut in less than a second. Special enzymes then break down the insect, providing the plant with the essential nutrients it cannot get from the ground.
What is the main idea of this passage?
A. Tiny trigger hairs cause the Venus flytrap to snap shut very quickly.
B. The Venus flytrap captures and digests insects to get nutrients it needs to survive.
C. Insects like to crawl onto the leaves of unique predatory plants.
D. Venus flytraps grow best in rich, healthy soil deep underground.
B. The Venus flytrap captures and digests insects to get nutrients it needs to survive.
Dogs use their excellent sense of smell to perform incredibly important jobs for humans. Some tracking dogs can sniff out the scent of missing people trapped under heavy snow or lost in the woods. Other medical dogs can smell subtle changes in a person’s body to warn them before they get sick.
The main idea of this passage is that dogs use their sense of smell to perform important jobs for humans. Which detail from the text best supports this main idea?
A. Medical dogs can sniff out body changes to warn people before they get sick.
B. Dogs are the most popular pets in the world because they are friendly.
C. Tracking dogs prefer to run through the woods rather than the deep snow.
D. Heavy snow makes it very difficult for humans to walk outside.
A. Medical dogs can sniff out body changes to warn people before they get sick.
"These are specific facts, examples, statistics, or pieces of evidence that an author includes to prove, explain, or back up the central point of a paragraph."
What is this term?
A. Topics
B. Supporting details
C. Irrelevant facts
D. Text features
B. Supporting details
(1) Exploring the deepest parts of the ocean requires specialized technology built to withstand extreme environments. (2) Many coastal tourist towns rely on scuba diving shops to boost their local economy during the summer. (3) Scientists use thick-walled robotic submarines that can dive thousands of feet without being crushed by the immense water pressure. (4) These deep-sea vessels are also equipped with powerful LED lights to cut through the absolute darkness of the ocean floor.
Which sentence is the impostor because it is irrelevant to the paragraph's main idea?
A. Sentence 1
B. Sentence 2
C. Sentence 3
D. Sentence 4
B. Sentence 2
The Claim: Allowing well-behaved therapy dogs into school classrooms significantly reduces student stress levels during difficult exam weeks.
Which of the following sentences provides the best evidence to support this claim?
A. A wide variety of dog breeds, including Golden Retrievers and Labradors, can easily be trained to sit quietly around large groups of children.
B. Heart rate monitors showed that students who spent five minutes petting a dog before their math test had much lower anxiety levels than those who sat in silence.
C. Many school principals are worried that bringing live animals into an older school building might trigger severe allergies for some students.
D. Dog owners generally spend hundreds of dollars each year on high-quality pet food, routine chew toys, and mandatory veterinary checkups.
B. Heart rate monitors showed that students who spent five minutes petting a dog before their math test had much lower anxiety levels than those who sat in silence.
Mars appears bright red in the night sky because its surface is covered in a thick layer of iron oxide, commonly known as rust. Strong desert winds blow this rusty dust into the thin atmosphere, creating a permanent reddish haze around the entire planet.
What is the main idea of this passage?
A. Strong desert winds regularly blow dust storms across Mars.
B. Mars has a reddish appearance because its surface and atmosphere are filled with rusty dust.
C. Iron oxide is a chemical compound commonly referred to as rust.
D. Mars has a very thin atmosphere compared to the planet Earth.
While many people think ghosts are just scary, some stories show them acting like playful tricksters. These silly spirits love to pull harmless pranks, such as hiding a person's favorite keys or making floorboards squeak just to startle them. They prefer playing gentle jokes rather than causing real harm.
The main idea of this passage is that some ghost stories show spirits acting like playful tricksters. Which detail from the text best supports this main idea?
A. Many people think that ghosts are always scary.
B. These silly spirits love to hide a person's favorite keys as a prank.
C. Squeaky floorboards are caused by old houses settling over time.
D. Ghosts prefer to live in dark basements and attics.
B. These silly spirits love to hide a person's favorite keys as a prank.
"When an author writes a paragraph but does not include a single, clear topic sentence, the main idea is considered implied. This means the reader must do this to find the main point."
What must a reader do when a main idea is implied?
A. Read only the first and last sentences of the text, as one of them will always contain the secret answer.
B. Look up unfamiliar vocabulary words in a dictionary to find the definition of the topic.
C. Examine all the supporting details together and use clues to infer the unstated central message.
D. Skip the passage entirely and rely on personal opinions to decide what the text should be about.
C. Examine all the supporting details together and use clues to infer the unstated central message.
(1) Choosing the right pet requires families to carefully research different animal food and veterinary costs. (2) The arctic fox has a thick, white winter coat that allows it to blend perfectly into the snowy tundra. (3) This specialized fur keeps the fox warm in freezing temperatures and helps it hide from predators. (4) As the seasons change and the snow melts, the fox's fur turns brown to match the summer rocks and dirt.
Which sentence is the impostor because it is irrelevant to the paragraph's main idea?
A. Sentence 1
B. Sentence 2
C. Sentence 3
D. Sentence 4
A. Sentence 1
The Claim: Starting the middle school day one hour later improves the overall physical and mental health of teenagers.
Which of the following sentences provides the best evidence to support this claim?
A. Medical studies show that schools with delayed start times see a massive drop in student depression, anxiety, and morning headaches because teens get adequate sleep.
B. Many parents prefer earlier school start times because it allows them to drop their children off on their way to work.
C. Students who ride the bus to school usually have to wake up at least forty-five minutes earlier than students who are driven by car.
D. School districts that switch to later start times often have to change the schedules for afternoon sports practices and club meetings.
A. Medical studies show that schools with delayed start times see a massive drop in student depression, anxiety, and morning headaches because teens get adequate sleep.
Although they look like dangerous predators, basking sharks are actually gentle giants of the sea. Instead of hunting large fish, they swim with their massive mouths wide open to filter tiny plankton out of the water. Their peaceful behavior and unique feeding style make them a favorite sight for ocean divers.
What is the main idea of this passage?
A. Basking sharks can grow to be massive sizes and have huge mouths.
B. Plankton are microscopic creatures that live in deep ocean water.
C. Ocean divers travel from all over the world to see dangerous sharks.
D. Basking sharks are harmless ocean giants that feed on tiny plankton.
D. Basking sharks are harmless ocean giants that feed on tiny plankton.
Deciduous trees undergo amazing changes to prepare themselves for the cold winter months ahead. In the fall, they stop making green chlorophyll, which causes their leaves to change into beautiful shades of red, orange, and yellow. Eventually, the trees drop these leaves completely to seal their branches and save energy.
The main idea of this passage is that trees change in the fall to prepare for the winter. Which detail from the text best supports this main idea?
A. Winter is the coldest season of the year and brings a lot of snow.
B. Red and yellow are the most popular leaf colors to paint in art class.
C. Trees stop making green chlorophyll, causing leaves to turn red, orange, and yellow.
D. Evergreen trees stay bright green all year long without dropping needles.
C. Trees stop making green chlorophyll, causing leaves to turn red, orange, and yellow.
"If a sentence in a paragraph is described as irrelevant, it means the sentence does this."
What does an irrelevant sentence do?
A. It provides the best piece of evidence to support the main idea.
B. It explains the definition of the topic in the very first sentence.
C. It does not belong because it is off-topic and does not support the main idea.
D. It hides clues that force the reader to make a smart guess.
C. It does not belong because it is off-topic and does not support the main idea.
(1) Social media apps are intentionally designed with specific features to keep users scrolling for as long as possible. (2) Every time a user pulls down to refresh their feed, a random mix of new videos and photos appears, mimicking the unpredictable excitement of a slot machine. (3) Most major cell phone companies require customers to sign up for an expensive monthly data plan. (4) Furthermore, the bright red notification badges and constant pinging sounds are strategically engineered to trigger curiosity and force people to open the app.
Which sentence is the impostor because it is irrelevant to the paragraph's main idea?
A. Sentence 1
B. Sentence 2
C. Sentence 3
D. Sentence 4
C. Sentence 3
The Claim: Planting more trees along city streets is an effective way to lower dangerously high summer temperatures in urban neighborhoods.
Which of the following sentences provides the best evidence to support this claim?
A. Volcanic eruptions and shifts in ocean currents can also cause global temperatures to fluctuate naturally over hundreds of years.
B. Many city residents prefer walking on sidewalks that are clean, well-lit, and completely free of fallen autumn leaves and broken branches.
C. Maple trees and oak trees are highly popular choices for city landscapers because their deep root systems do not easily crack the concrete pavement.
D. Thermal satellite imaging data shows that tree-lined city streets stay up to ten degrees cooler in July than streets completely covered in concrete and asphalt.
D. Thermal satellite imaging data shows that tree-lined city streets stay up to ten degrees cooler in July than streets completely covered in concrete and asphalt.