Reading and Writing Two-Digit Numbers
Reading and Writing Numbers 11-20
Learning Standards
Content Standard
The learner demonstrates understanding of whole numbers up to 1000
Performance Standard
The learner is able to recognize and represent whole numbers up to 1000
Learning Competency
Read and write numbers from 11 to 20 in symbols and words
Code: M2NS-Ia-1
Complete Lesson Plan
Learning Objectives
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Read two-digit numbers from 11 to 20
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Write numbers 11-20 in symbols and words
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Identify the place value of digits in numbers 11-20
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Arrange numbers from 11-20 in order
Lesson Procedures
motivation
Story: 'I went to the store and bought fifteen candies. Can you show me 15 using your fingers? How do we write this number?'
presentation
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Show base-10 blocks: 1 ten rod and 1 ones cube = 11 (eleven)
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Demonstrate: The digit on the left is the tens place, the right is the ones place
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Present all numbers from 11-20 with blocks:
- 11 = 1 ten + 1 one = eleven
- 12 = 1 ten + 2 ones = twelve
- 15 = 1 ten + 5 ones = fifteen
- 20 = 2 tens + 0 ones = twenty
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Show how to write each number in words on the board
generalization
Questions:
- How many digits do numbers 11-20 have?
- What does the first digit tell us?
- What does the second digit tell us?
guided practice
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Build numbers together using base-10 blocks:
- Make 13 (1 ten rod, 3 ones cubes)
- Make 17 (1 ten rod, 7 ones cubes)
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Read number cards as a class
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Write numbers on the board: Teacher says 'fourteen', students write 14
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Practice place value: Circle the tens digit, underline the ones digit
independent practice
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Worksheet Activity 1: Match the number to the word
- 14 → fourteen
- 18 → eighteen
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Activity 2: Write the number shown by the blocks
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Activity 3: Write each number in words:
- 11 = __________
- 16 = __________
- 19 = __________
preliminary activities
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Prayer and greetings
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Quick review: Count from 1-10
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Check attendance using number cards
Assessment
answers
- 16
- thirteen
- 1 ten
- 2 ones
- (1 ten rod + 5 ones cubes drawn)
evaluation
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Answer the following:
- Write in symbols: sixteen = ____
- Write in words: 13 = __________
- How many tens in 19? ____
- How many ones in 12? ____
- Draw blocks to show 15
Materials & Resources
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Base-10 blocks
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Number cards 11-20
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Place value charts
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Number word flashcards
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Manila paper and markers
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Student worksheets
assignment
Homework:
- Write numbers 11-20 in words in your notebook
- Draw base-10 blocks for numbers 13, 16, and 20
- Find 5 two-digit numbers at home (on clocks, calendars, etc.)
Remarks:
- Monitor students' understanding of place value
- Provide extra practice for number word spelling
subject matter
Topic: Reading and Writing Two-Digit Numbers (11-20)
Key Concepts:
- Two-digit numbers have tens and ones
- Numbers 11-19 have 1 ten and different ones
- Number 20 has 2 tens and 0 ones
- Reading numbers correctly: eleven, twelve, thirteen...
- Writing numbers in symbols and words
Materials:
- Base-10 blocks (tens and ones)
- Number cards 11-20
- Place value chart
- Flashcards with number words
- Manila paper