PowerPoint Slides on Composing and Decomposing Numbers in Grade 1

Master composing and decomposing numbers: place value, tens and ones, number bonds activities designed for PowerPoint presentations.

PowerPoint Concepts and Structure
📊 PPT: Composing & Decomposing 📊
10
Tens
1
Ones
15
1T + 5O
Key Definitions:

Composing: Putting numbers together to make a larger number

Decomposing: Breaking apart a number into smaller parts

Place Value: Where a digit sits tells its value (tens, ones)

Base Ten: Our number system uses groups of 10

Number Bonds: Different ways to make the same number

PowerPoint Format: Designed for classroom presentations

Number = Tens + Ones
Place Value Formula
PPT Strategy:
  1. Visual Impact: Use large, clear visuals
  2. Step-by-step: Break down complex concepts
  3. Engagement: Include interactive elements
  4. Reinforcement: Repeat key concepts
Tip 1: Use consistent visual themes
Tip 2: Include animations for engagement
Tip 3: Add practice slides for interaction
Important: Every number can be broken into tens and ones.
Remember: 10 ones = 1 ten.
PowerPoint Slides: 1-3
1 Slide: Basic Composing
Slide 1: Basic Composing
1 COMPOSING NUMBERS
Build numbers using tens and ones
2 tens and 3 ones make what number?
Slide Purpose:

Introduction: Basic concept of composing numbers

PPT Structure:
  1. Large title with clear objective
  2. Visual representation of tens and ones
  3. Step-by-step process
  4. Interactive element (click to reveal answer)
10
10
1
1
1
Tens
2
Ones
3
Number
23
Step 1: Count the tens

2 tens = 2 × 10 = 20

Step 2: Count the ones

3 ones = 3 × 1 = 3

Step 3: Add them together

20 + 3 = 23

Step 4: Click for answer

Answer reveals: 2 tens + 3 ones = 23

2 tens + 3 ones = 23
Slide Content:

2 tens and 3 ones make the number 23

PPT Design Rules:

• Large fonts: Easy to read from back of room

• Clear visuals: Support learning objectives

• Step-by-step: Logical progression

2 Slide: Basic Decomposing
Slide 2: Basic Decomposing
2 DECOMPOSING NUMBERS
Break apart numbers into tens and ones
How many tens and ones in 37?
Slide Purpose:

Introduction: Basic concept of decomposing numbers

10
10
10
1
1
1
1
1
1
1
Number
37
Tens
3
Ones
7
Step 1: Look at the number

We have the number 37

Step 2: Count the tens

How many tens are in 37? 3 tens (30)

Step 3: Count the ones

After taking away 30, we have 7 left

Step 4: Click for answer

Answer reveals: 37 = 3 tens + 7 ones

37 = 3 tens + 7 ones
Slide Content:

37 has 3 tens and 7 ones

PPT Design Rules:

• Visual clarity: Clear tens and ones representation

• Logical flow: Sequential steps

• Interactive: Engage students with reveal

3 Slide: Number Bonds
Slide 3: Number Bonds
3 NUMBER BONDS
Different ways to make the same number
Find different ways to make 15
Slide Purpose:

Introduction: Flexibility in number composition

Bond 1
10+5
Bond 2
9+6
Bond 3
8+7
Step 1: Start with place value

15 = 10 + 5 (1 ten + 5 ones)

Step 2: Find other combinations

15 = 9 + 6, 8 + 7, 12 + 3, etc.

Step 3: Click for more options

More combinations reveal with animation

Step 4: Practice activity

Students find their own combinations

15 = 10+5, 9+6, 8+7, 12+3...
Slide Content:

Multiple ways to make 15 using addition

PPT Design Rules:

• Variety: Show multiple approaches

• Engagement: Interactive practice elements

• Flexibility: Encourage creative thinking

PowerPoint Slides: 4-5
4 Slide: Mixed Practice
Slide 4: Mixed Practice
4 MIXED PRACTICE
Practice both composing and decomposing
Complete these problems:
42 = ___ tens + ___ ones
3 tens + 8 ones = ___
56 = ___ tens + ___ ones
Slide Purpose:

Practice: Alternating between composing and decomposing

Problem 1: 42 = ___ tens + ___ ones

42 has 4 tens (40) and 2 ones (2)

Problem 2: 3 tens + 8 ones = ___

3 tens = 30, 8 ones = 8, so 30 + 8 = 38

Problem 3: 56 = ___ tens + ___ ones

56 has 5 tens (50) and 6 ones (6)

42
4T+2O
3T+8O
38
56
5T+6O
Step 1: Solve first problem

42 = 4 tens + 2 ones

Step 2: Solve second problem

3 tens + 8 ones = 38

Step 3: Solve third problem

56 = 5 tens + 6 ones

Step 4: Self-check activity

Students check answers with partner

42=4T+2O, 3T+8O=38, 56=5T+6O
Slide Content:

42=4T+2O, 3T+8O=38, 56=5T+6O

PPT Design Rules:

• Practice focus: Multiple problems for reinforcement

• Self-check: Built-in verification

• Peer interaction: Collaborative learning

5 Slide: Challenge
Slide 5: Challenge
5 CHALLENGE PROBLEMS
Word problems with real contexts
Emma has 2 tens and 5 ones. How many total?
Tom has 43 marbles. How many tens and ones?
What number has 6 tens and 9 ones?
Slide Purpose:

Application: Using concepts in real contexts

Emma's Problem: 2 tens + 5 ones = ?

2 tens = 20, 5 ones = 5, so 20 + 5 = 25

Tom's Problem: 43 = ? tens + ? ones

43 has 4 tens (40) and 3 ones (3)

Third Problem: 6 tens + 9 ones = ?

6 tens = 60, 9 ones = 9, so 60 + 9 = 69

Emma
25
Tom
4T+3O
Third
69
Step 1: Solve Emma's problem

2 tens + 5 ones = 25 total

Step 2: Solve Tom's problem

43 = 4 tens + 3 ones

Step 3: Solve third problem

6 tens + 9 ones = 69

Step 4: Discussion activity

Students share their problem-solving strategies

Emma: 25, Tom: 4T+3O, Third: 69
Slide Content:

Emma has 25, Tom has 4 tens + 3 ones, answer is 69

PPT Design Rules:

• Real-world: Contextual word problems

• Critical thinking: Multi-step problems

• Discussion: Promote mathematical discourse

PowerPoint Presentation: Complete Guide

PowerPoint Structure for Grade 1

Slide Format: Large, clear visuals with minimal text

Design: Consistent color scheme and fonts

Animation: Step-by-step reveals to maintain focus

Interaction: Built-in practice and discussion opportunities

Grade 1 Specific Considerations

For PowerPoint presentations in grade 1, consider:

  • Font size: Minimum 36pt for readability
  • Visuals: Large, clear graphics and manipulatives
  • Colors: High contrast for visibility
  • Animations: Simple reveals, not distracting
  • Timing: Allow time for processing

Presentation Flow

Opening: Clear learning objective and visual hook
Content: Step-by-step development of concepts
Practice: Guided and independent activities
Assessment: Check for understanding
Closure: Summary and preview of next lesson

Interactive Elements

Click-to-reveal: Answers and explanations appear on click

Drag-and-drop: Students manipulate objects on screen

Timer activities: Timed practice for fluency

Voting: Poll students on answers

Common Grade 1 PPT Challenges

  • Keeping attention with long presentations
  • Ensuring all students can see clearly
  • Maintaining pace appropriate for all learners
  • Providing sufficient practice opportunities

Support Strategies

  • Include frequent breaks and movement
  • Use large, clear visuals
  • Provide hands-on manipulatives alongside PPT
  • Include student response opportunities

Key Learning Objectives

  • Recognize that two-digit numbers are composed of tens and ones
  • Fluently decompose numbers into tens and ones
  • Compose numbers from given tens and ones
  • Understand the relationship between tens and ones
  • Apply concepts to solve word problems
  • Build foundation for future math concepts

Assessment Integration

  • Include quick checks for understanding
  • Use exit tickets at end of presentation
  • Embed formative assessments throughout
  • Provide immediate feedback opportunities

Questions & Answers

Question: How can I make PowerPoint presentations more engaging for first graders who have short attention spans?

Answer: Here are effective strategies for engaging first graders:

  • Keep slides simple with minimal text and large visuals
  • Include frequent interaction opportunities (click to reveal, turn and talk)
  • Use animations sparingly but effectively
  • Include movement breaks between sections
  • End with a fun closing activity

Consider the 10-minute rule: change activities or introduce a break every 10 minutes for first graders.

Question: What are the best visual representations for tens and ones in PowerPoint presentations?

Answer: Effective visual representations include:

  • Base ten blocks (long rectangles for tens, small squares for ones)
  • Grouped objects (10 items circled together)
  • Number lines with jumps of 10 and 1
  • Place value charts with tens and ones columns
  • Color-coded representations (different colors for tens and ones)

Consistency in visual style across all slides helps reinforce learning.

Question: How can I assess student understanding during PowerPoint-based lessons?

Answer: Embed assessment throughout the presentation:

  • Include "think-pair-share" moments
  • Use thumbs up/down for quick checks
  • Include interactive polls or surveys
  • Pause for students to solve problems independently
  • Use exit tickets at the end

Formative assessment integrated into the presentation provides immediate feedback on student understanding.