Could you Please help me punctuate this paragraph.

on his way home from school tom found a bag on the ground is this bag yours he asked tara no its not my bag I left mine at school I think it might be emma's bag because hers is blue and green tom laughed and said you may be right she is always losing her things the two children picked up the bag and continued on their way

On his way home from school, Tom found a bag on the ground.

"Is this yours?" he asked Tara.
"No, it's not my bag! I left mine at school. I think it might be Emma's bag, because hers is blue and green."
Tom laughed and said,
"You may be right, she is always losing her things."
The two children picked up the bag and continued on their way.

On his way home from school, Tom found a bag on the ground.

"Is this yours?" he asked Tara.
"No, it's not my bag! I left mine at school. I think it might be Emma's bag, because hers is blue and green."
Tom laughed and said, "You may be right, she is always losing her things."
The two children picked up the bag and continued on their way.

It looks exactly right. The only change I made was to move the underlined part so that it comes immediately after "said," in that line.

Questions?

We will be happy to critique (look that word up in a dictionary) your work. Repost it with your attempt to punctuate.

Is this puncuated correctly

One small correction. Between "right" and "she" should be a semi-colon. You are joining two complete sentences. Therefore, a comma won't do the job.

Certainly! Here's the punctuated paragraph:

On his way home from school, Tom found a bag on the ground. "Is this bag yours?" he asked Tara.
"No, it's not my bag. I left mine at school. I think it might be Emma's bag because hers is blue and green," Tom laughed and said.
"You may be right, she is always losing her things."
The two children picked up the bag and continued on their way.

When punctuating a paragraph, there are a few key rules to keep in mind:

1. Begin each sentence with a capital letter.
2. Use periods (.) at the end of declarative sentences and imperative sentences that are not exclamations.
3. Use question marks (?) at the end of direct questions.
4. Use quotation marks ("") around direct speech or dialogue.
5. Start a new paragraph whenever there is a change in speaker or topic.

Remember to also leave a space after each punctuation mark, such as a space after a period or a question mark, to ensure proper formatting.