Here is a concise summary of the provided text:
**Setting:** A school classroom, first day of school
**Characters:** Students (narrator and friends), Mathematics Teacher, Principal
**Summary:**
* The narrator and friends start their first day of school, initially focusing on their mathematics class.
* The mathematics teacher introduces the concept of fractions using a cake example, but soon leaves the classroom.
* The students attempt to escape through a tunnel built under the table but are thwarted by the principal's arrival.
* The teacher returns, and the class resumes, with the students eventually being assigned homework on fractions.
* The lesson ends, and the students are dismissed, with the narrator expressing relief and mocking the "nerd" teacher.
* The text concludes with an out-of-character section promoting a YouTube channel with school-themed content.
Here are the key facts extracted from the text, without opinions, in short sentences with numbers:
1. **Setting**: The scene is set in a school classroom.
2. **Initial Event**: It's the first day of school with a new teacher.
3. **Subjects Mentioned**:
* Italian
* Mathematics
* Physical Education
4. **Mathematics Lesson**: The math teacher introduces the concept of fractions.
5. **Teaching Method**: The teacher uses a cake as an example to explain fractions.
6. **Student Behavior**: Students attempt to escape or avoid doing homework.
7. **Tunnel Escape Attempt**: A student claims to have built a tunnel under the table to escape.
8. **Principal's Intervention**: The principal enters the classroom, finding the teacher absent.
9. **Students' Whereabouts**: The principal takes the students to her room.
10. **Lesson Conclusion**: The lesson ends with the teacher instructing students to practice fractions.
11. **Homework**: The teacher leaves homework, but it's mentioned there might not be any for that day.
12. **School Day End**: The school day ends, with students reluctant to stay and do homework.
13. **Call to Action (External)**: At the very end, there's a call to subscribe to a channel for more videos, seemingly unrelated to the classroom events.