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Main Idea & Details

Grade 5 · Building confidence · 8 questions · Version PG-161TK69-3QUM

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1.Read: “The first model predicted flooding from rainfall alone. A revised model also included soil saturation and paved surfaces, and its predictions matched later storms more closely.” What is the main idea?
2.Read: “Two teams tested paper airplanes. One changed the wing shape; the other changed both the wings and the paper weight, making its results harder to explain.” What is the main idea?
3.Read: “The council's first traffic plan shortened car trips but removed a busy crosswalk. After residents objected, the revision restored the crossing and added a protected turn lane.” What is the main idea?
4.Read: “The town planted native grasses beside the river. Their deep roots held soil during storms, and the water became less muddy.” What is the main idea?
5.Read: “The creek looked shallow near the bank but deepened toward the center. Maya used the marked bridge posts instead of guessing the water level.” What is the main idea?
6.Read: “One article called the new park expensive, while another emphasized cleaner air and cooler streets. The budget showed high initial costs but lower maintenance expenses over time.” What is the main idea?
7.Read: “Keiko read two reports about the same storm. One used measurements from weather stations; the other relied on a single person's memory.” What is the main idea?
8.Read: “During drought, the farm watered every field equally and several crops wilted. The next season, soil sensors directed water only where moisture was low.” What is the main idea?

Answers and teaching notes

Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.

Show answers for version 14
  1. Read: “The first model predicted flooding from rainfall alone. A revised model also included soil saturation and paved surfaces, and its predictions matched later storms more closely.” What is the main idea?Models improve when they include relevant variables.
  2. Read: “Two teams tested paper airplanes. One changed the wing shape; the other changed both the wings and the paper weight, making its results harder to explain.” What is the main idea?A fair test changes one variable at a time.
  3. Read: “The council's first traffic plan shortened car trips but removed a busy crosswalk. After residents objected, the revision restored the crossing and added a protected turn lane.” What is the main idea?Public feedback improved a plan by addressing competing needs.
  4. Read: “The town planted native grasses beside the river. Their deep roots held soil during storms, and the water became less muddy.” What is the main idea?Native grasses helped reduce riverbank erosion.
  5. Read: “The creek looked shallow near the bank but deepened toward the center. Maya used the marked bridge posts instead of guessing the water level.” What is the main idea?Reliable measurements are safer than appearances.
  6. Read: “One article called the new park expensive, while another emphasized cleaner air and cooler streets. The budget showed high initial costs but lower maintenance expenses over time.” What is the main idea?Evaluating a proposal requires considering short- and long-term evidence.
  7. Read: “Keiko read two reports about the same storm. One used measurements from weather stations; the other relied on a single person's memory.” What is the main idea?Sources can differ in the strength of their evidence.
  8. Read: “During drought, the farm watered every field equally and several crops wilted. The next season, soil sensors directed water only where moisture was low.” What is the main idea?Targeted measurement can conserve water and support crops.

Worked example

State what the whole passage is mostly about, then point to a supporting detail.

Common mistake

Choosing one interesting detail instead of the idea supported by the whole text.

Helpful hint

Ask what most sentences have in common.