Problem Analysis:
The task involves identifying the
main idea of a passage and selecting one
supporting detail from the given options. Let's break it down step by step.
#### Passage Summary:
The passage discusses bats and their role in the environment. Key points include:
1. Some bats eat many insects.
2. Some bats can eat up to 600 mosquitoes in one hour.
3. Bats are helpful to the environment because they eat insects.
4. Without bats, there would be too many insects.
#### Task Breakdown:
1.
Main Idea: The main idea is the central point or overall message of the passage.
2.
Supporting Detail: A supporting detail is a specific piece of information that helps explain or support the main idea.
---
Solution:
#### Step 1: Identify the Main Idea
The main idea should capture the overall purpose or focus of the passage. Let’s evaluate the options:
-
Option A: Bats are mammals.
- While this is true, it is not the central focus of the passage. The passage does not discuss the classification of bats as mammals but rather their behavior and environmental impact.
-
Option B: Bats eat 600 mosquitoes in one hour.
- This is a specific detail mentioned in the passage, but it is not the main idea. It is an example used to illustrate how bats eat insects.
-
Option C: Bats eat many insects.
- This option captures the overall focus of the passage. The passage emphasizes that bats consume large numbers of insects and highlights their importance in controlling insect populations.
Correct Answer for Main Idea: C. Bats eat many insects.
---
#### Step 2: Identify One Supporting Detail
A supporting detail provides evidence or examples that back up the main idea. Let’s evaluate the options:
-
Option A: Bats are mammals.
- This is not directly related to the main idea about bats eating insects.
-
Option B: Bats eat 600 mosquitoes in one hour.
- This is a specific example provided in the passage to show how bats eat many insects. It supports the main idea.
-
Option C: Bats eat many insects.
- This is the main idea itself, not a supporting detail.
Correct Answer for Supporting Detail: B. Bats eat 600 mosquitoes in one hour.
---
Final Answers:
1.
What is the main idea?
-
C. Bats eat many insects.
2.
What is one supporting detail?
-
B. Bats eat 600 mosquitoes in one hour.
---
Boxed Final Answer:
\[
\boxed{C, B}
\]
Parent Tip: Review the logic above to help your child master the concept of main idea worksheets 3rd grade.
