Grade 1 capitalization worksheet with sentence exercises and illustrations.

Problem Overview:

The task is to identify which sentences begin with a capital letter. The instructions specify that the first word in a sentence should always start with a capital letter. We need to carefully examine each sentence and determine if it follows this rule.

Solution Approach:

1. Understand the Rule: The first word of every sentence must start with a capital letter.
2. Analyze Each Sentence: Check the first word of each sentence to see if it is capitalized.
3. Mark the Sentences: Fill in the circle next to the sentences that begin with a capital letter.

Step-by-Step Analysis:

#### Sentence 1: "That little mouse eats cheese."
- First word: "That" (capitalized)
- Correct: Circle this sentence.

#### Sentence 2: "my Dad is fixing the car."
- First word: "my" (not capitalized)
- Incorrect: Do not circle this sentence.

#### Sentence 3: "Did you see the movie?"
- First word: "Did" (capitalized)
- Correct: Circle this sentence.

#### Sentence 4: "I got a new bike for my birthday."
- First word: "I" (capitalized)
- Correct: Circle this sentence.

#### Sentence 5: "he is playing with his truck."
- First word: "he" (not capitalized)
- Incorrect: Do not circle this sentence.

#### Sentence 6: "when will we go to the park?"
- First word: "when" (not capitalized)
- Incorrect: Do not circle this sentence.

#### Sentence 7: "My dog likes to bark at the mailman."
- First word: "My" (capitalized)
- Correct: Circle this sentence.

#### Sentence 8: "The teacher passed out the papers."
- First word: "The" (capitalized)
- Correct: Circle this sentence.

#### Sentence 9: "the boat is on the lake."
- First word: "the" (not capitalized)
- Incorrect: Do not circle this sentence.

#### Sentence 10: "Julie will help bake cookies."
- First word: "Julie" (capitalized)
- Correct: Circle this sentence.

Final Answer:

The sentences that begin with a capital letter are:
1, 3, 4, 7, 8, and 10.

Marked Sentences:

- ☐ 1. That little mouse eats cheese.
- ☐ 2. my Dad is fixing the car.
- ☐ 3. Did you see the movie?
- ☐ 4. I got a new bike for my birthday.
- ☐ 5. he is playing with his truck.
- ☐ 6. when will we go to the park?
- ☐ 7. My dog likes to bark at the mailman.
- ☐ 8. The teacher passed out the papers.
- ☐ 9. the boat is on the lake.
- ☐ 10. Julie will help bake cookies.

Final Answer Boxed:
\[
\boxed{1, 3, 4, 7, 8, 10}
\]