Create a "short lesson" on the topic: ?Numbers? Lesson should include: Pre-knowledge Objective Body of the lesson Resources Activity/Assessment ? ?

Topic: Numbers

Pre-knowledge: Students should have a basic understanding of counting and recognizing numbers 1-10.

Objective: By the end of this lesson, students will be able to identify and write numbers 1-20.

Body of the lesson:
1. Start by reviewing numbers 1-10 with the students. Have them count aloud and show the corresponding number of fingers.
2. Introduce numbers 11-20 by writing them on the board and having the students repeat after you.
3. Show the students how to write each number by demonstrating on the board. Have them practice writing each number on their own.
4. Use visual aids such as number flashcards or a number chart to help reinforce the concept of numbers 1-20.
5. Have the students practice counting objects in the classroom and matching them to the correct number.
6. Play a game where students have to identify and write numbers 1-20 on a whiteboard or piece of paper.

Resources:
- Number flashcards
- Number chart
- Whiteboard and markers
- Objects for counting (such as blocks or toys)

Activity/Assessment:
For the assessment, have the students complete a worksheet where they have to write the numbers 1-20. You can also have them participate in a counting activity where they have to count objects and match them to the correct number. This will help reinforce their understanding of numbers 1-20.