Full lesson	Create for a teacher a set of content for giving a lesson, beginning with the lesson plan. Each new block of materials must begin with an H1 heading (other subheaders must be H2, H3, etc). When you describe required pictures, write those descriptions in curly brackets, for example: {A picture of a triangle}
Which subject	Mathematics
What topic	Addition within 20
What length (min)	30
What age group	Doesn't matter
Class size	20
What curriculum
Include full script
Check previous homework
Ask some students to presents their homework
Add a physical break
Add group activities
Include homework
Show correct answers
Prepare slide templates
Number of slides	5
Create fill-in cards for students
Create creative backup tasks for unexpected moments

Lesson plan

Topic

Addition within 20

Objectives

• To develop students' understanding of addition within 20.
• To enhance mental arithmetic skills.
• To promote collaborative learning through group activities.
• To assess students' understanding through structured practice and independent work.

Materials

• Whiteboard and markers
• Number line (for visual aid)
• Addition flashcards
• Worksheets with addition problems
• Small counters or manipulatives
• Timer

Grade/Age Group

• Key Stage 1 (Ages 5-7)

Subject

Mathematics

Lesson Length

30 minutes

Class Size

20 students

National Curriculum Correspondence

This lesson aligns with the UK National Curriculum standards for Mathematics, specifically focusing on addition within 20 for early primary education.

Lesson Structure

Step Number	Step Title	Length (minutes)	Details
1	Introduction	5	Briefly explain the concept of addition and its importance; engage students with a question about what addition means to them.
2	Guided Practice	10	Introduce addition within 20 using number lines and flashcards; model 2-3 examples on the whiteboard, involving students in solving them.
3	Collaborative Activity	10	Organise students into small groups (4-5 per group) to solve addition problems using counters; set a timer for this activity and circulate to assist where necessary.
4	Independent Practice	5	Distribute worksheets with addition problems to each student for individual completion; encourage them to use mental strategies or manipulatives if needed.
5	Review and Closure	5	Quickly review key concepts and provide answers for the worksheet; address any common errors while collecting worksheets to check for understanding.

Homework

• Assign a worksheet with additional addition problems for students to practice at home. Provide a written explanation for parents on how to support their child with the homework. Collect the completed homework in the next lesson without requiring students to present their work in front of the class.

Assessment

• Informal assessment through observation during group work and guided practice.
• Review completed worksheets to check for understanding and address issues in future lessons if necessary.

Lesson script