Corrected sentence:
Student age: 6 years old.
Some animals have huge teeth, some have thousands of tiny ones, and one has almost none at all! Look who came to show off their super smiles today!
Step-by-step explanation (easy to understand):
- Student age: We write this as "Student age: 6 years old." instead of "6-year-old" because here it is a simple label, not describing a noun right after it.
- All caps: I changed "HUGE" to "huge." Writing in all capital letters looks like shouting, so we use normal letters.
- Ellipsis: I removed the dots ("…") after "one". A normal sentence flows better with a comma or just a space: "and one has almost none at all!"
- Super smiles: I changed "super-smiles" to "super smiles." You can use a hyphen when two words act like one adjective before a noun (for example, "well-known person"), but here "super smiles" is fine without a hyphen.
- Their: The word "their" is okay here because it talks about the animals (more than one) who came to show their smiles.
If you want the sentence even simpler for a young child, you can say: "Some animals have big teeth. Some have thousands of tiny teeth. One has almost no teeth! Look who came to show their big, silly smiles!"