Lesson start ideas	Give a creative idea how to begin a lesson
Which subject	Mathematics
What age group	Doesn't matter
What topic
Quantity	1
Any other preferences

Objective:

The objective of the lesson is to introduce students to a fun and engaging way to start exploring core mathematical concepts while developing logical reasoning and critical thinking skills.

Materials Needed:

All you need is a pencil and a piece of paper to work out the solution to the puzzle!

The Puzzle:

It's time to put on your thinking cap! Solve the following puzzle to uncover the mystery number:

1. Start with any three-digit number (e.g., 123).
2. Reverse the digits and subtract the smaller number from the larger number.
3. Add the result to the reverse of itself (e.g., if the result is 456, add 654).
4. What is the final result?

Discuss:

After students have had time to work out the puzzle, bring the class together for a discussion. Ask students to share their answers and thought processes. Encourage students to explain how they arrived at their answer. Discuss the importance of reasoning and thinking logically when working with mathematical concepts.

Conclusion:

By solving this puzzle, students have already begun to develop mental agility, logical thinking, and analytical skills. In the upcoming lessons, we will explore more mathematical concepts and applications that will build upon the skills and techniques introduced today.