aidemia--modules-lessonplan_request	Titles of parts of the lesson must be formatted as headings
What to create	Lesson plan
Which subject	Mathematics
What topic	Composing and decomposing
What length (min)	30
What age group	Reception / Kindergarten
Include homework
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Lesson Plan: Composing and Decomposing in Mathematics

Grade Level

Reception / Kindergarten

Duration

30 Minutes

Objective

Students will understand the concepts of composing and decomposing numbers using objects and visual aids. By the end of the lesson, they will be able to recognize how numbers can be formed and broken down into smaller parts.

Standards

This lesson aligns with the Common Core State Standards for Mathematics for Kindergarten, specifically:

• K.NBT.A.1: Compose and decompose numbers from 11 to 19 into ten and some more.

Materials Needed

• Counting manipulatives (e.g., blocks, counting bears, buttons)
• Whiteboard and markers
• Large number cards (1-20)
• Worksheets with composition and decomposition activities
• Craft supplies (e.g., paper, scissors, glue)

Lesson Outline

1. Introduction (5 minutes)

• Start with a Warm-Up Activity:
  • Gather the students in a circle and ask them how many objects they see in front of them.
  • Use manipulatives to demonstrate composing and decomposing.
  • Example: Show 5 blocks and ask, "How can we make 5 using other numbers?" (e.g., 2 and 3).

2. Direct Instruction (10 minutes)

• Explain Composing and Decomposing:

  • Define composing as putting two or more parts together to make a whole (e.g., combining 2 and 3 to make 5).
  • Define decomposing as breaking a whole into its parts (e.g., splitting 5 into 2 and 3).

• Use Visual Aids:

  • Use a whiteboard to write equations (e.g., 2 + 3 = 5) and demonstrate with objects.
  • Show how numbers can be visually represented using number bonds.

3. Guided Practice (10 minutes)

• Hands-on Activity:
  • Give each student a set of counting manipulatives.
  • Ask them to create different combinations that equal a specific target number (e.g., “Make 7 using any manipulatives you want!”).
  • Have students share their compositions with the class.

4. Independent Practice (5 minutes)

• Worksheet Activity:
  • Distribute worksheets that include exercises for composing and decomposing numbers.
  • Example: "Circle the combinations that make 10."

5. Conclusion (5 minutes)

• Review and Recap:

  • Gather students to share what they learned about composing and decomposing numbers.
  • Ask reflective questions: “What does it mean to decompose a number?” and “Can you give me an example?”

• Closing Activity:

  • Tell the children to find a partner and come up with one composing and one decomposing example to share with the class.

Assessment

• Observe students during the guided practice and independent practice to assess their understanding.
• Collect worksheets to evaluate students' ability to compose and decompose numbers.

Additional Notes

• Provide support to students who may struggle with the concept by offering one-on-one help or using more visual aids.
• Consider integrating a fun song about numbers to keep engagement high throughout the lesson.

Extensions

• For advanced students, introduce simple addition or subtraction problems using composing and decomposing concepts.

End of Lesson Plan

This lesson plan is designed to be interactive and engaging, suitable for young learners to grasp fundamental mathematical concepts through hands-on activities and collaboration.