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Which subject	Mathematics
What topic	Decompose numbers to 100,000
What length (min)	30
What age group	Doesn't matter
Class size	20
What curriculum
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Number of slides	5
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Lesson plan

Lesson Plan: Decomposing Numbers to 100,000

Subject

Mathematics

Topic

Decomposing Numbers to 100,000

Grade/Age Group

Elementary Students (Grades 4-6)

Objectives

• Students will understand the concept of decomposing numbers up to 100,000.
• Students will practice breaking down larger numbers into smaller, manageable parts using place value understanding.
• Students will apply their decomposition skills to solve real-world mathematical problems.

Materials

• Whiteboard and markers
• Place value charts
• Worksheets with practice problems
• Small manipulatives (e.g., base-ten blocks)
• Projector (for visuals or animated examples)

Class Size

20 Students

Lesson Length

30 Minutes

National Curriculum Alignment

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

• CCSS.MATH.CONTENT.5.NBT.A.1: Understand the place value system.
• CCSS.MATH.CONTENT.5.NBT.A.2: Explain patterns in the number of zeros of the product when multiplying a number by powers of 10.

Lesson Structure

Step Number	Step Title	Length	Details
1	Introduction	5 min	Introduce the topic of decomposing numbers. Discuss the importance of place value.
2	Direct Instruction	10 min	Explain how to decompose a number using examples on the whiteboard, covering different methods (expanded form). Use visuals to enhance understanding.
3	Guided Practice	5 min	Work through a couple of practice problems as a class, ensuring student participation and support.
4	Independent Practice	5 min	Distribute worksheets for students to practice decomposing numbers independently. Offer assistance as needed.
5	Review and Closing	5 min	Review key concepts by asking questions and clarifying misunderstandings. Provide a brief overview of the homework assignment.

Assessment

• Formative assessment through observation during guided and independent practice.
• Review of completed worksheets to check for understanding and accuracy.

Homework

• Students will complete a worksheet on decomposing numbers, which will be collected at the beginning of the next lesson for grading without presentation in front of the class.

Additional Notes

• Ensure to accommodate different learning styles by providing visual aids and hands-on activities.
• Encourage students to ask questions throughout the lesson to foster a supportive learning environment.

Lesson script