📖

Step-by-Step Regrouping: Breaking Apart Tens

Subtraction Within 100: Regrouping Introduction

Day 42of 180
Week 9of 36
30Minutes
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🖨️ Download Worksheet (PDF)🧮 Download Math Practice (PDF)
🎯 What You'll Learn

Learning Objectives

1

Understand how to regroup tens into ones during subtraction

2

Use base-ten blocks to model regrouping problems

3

Develop patience and persistence in problem-solving

📖 Scripture Connection

Proverbs 4:7

“Wisdom is supreme. Get wisdom. Yes, though it costs all your possessions, get understanding.”

— Proverbs 4:7 (WEB)

Just as we break down math problems step by step, we can break down complex ideas to gain understanding

📦 Materials Needed

  • Base-ten blocks
  • Place value mat
  • Pencil
  • Subtraction worksheet
  • BibleMouse Regrouping Practice Printable
📚 Step-by-Step

Lesson Plan

1Opening (3 min)

Welcome to today's BibleMouse math adventure! Yesterday, we learned about trading down when we need more ones. Today, we'll practice breaking apart tens to solve subtraction problems.

💭 Review Question: Can you remember what we do when we don't have enough ones to subtract?
2Teaching (10 min)

Let's explore how we can break apart tens to help us subtract. Remember, each ten block can be traded for ten ones when we need them!

📌 Key Talking Points:
  • Tens are like a team of ten friends who can work together
  • When we need more ones, we can 'borrow' from the tens group
  • This helps us solve problems we couldn't solve before
💬 Discussion Questions:
  • What happens when we don't have enough ones?
  • How can breaking apart tens help us solve subtraction?
3Activity: Regrouping Block Party (12 min)
hands-on

Use base-ten blocks to solve subtraction problems that require regrouping

📝 Instructions:
  1. Start with a ten block and ones blocks
  2. When you can't subtract, trade one ten for ten ones
  3. Solve the subtraction problem step by step
  4. Check your work using the BibleMouse Regrouping Practice Printable
🔄 Variations:

Simpler: Use smaller numbers and fewer blocks

Challenge: Create your own complex regrouping problems

4Closing (3 min)

Let's review what we learned about breaking apart tens!

📝 Review Questions:
  • What did we do when we didn't have enough ones?
  • How do base-ten blocks help us understand regrouping?

Coming up: Tomorrow, we'll learn how to record our regrouping steps on paper

👨‍👩‍👧 For Parents

Teaching Notes

📚 Background:

Regrouping is a critical math skill that builds understanding of place value

💡 Teaching Tips:
  • Be patient and use lots of positive encouragement
  • Let your child explore and make mistakes
  • Use the BibleMouse Resource Guide for additional support
🤔 Common Struggles:

Children often get confused about trading tens for ones

👀 Signs of Understanding:

Confidence in using base-ten blocks, understanding of trading

🚀 Want More?

Extension Activities

  • Create a regrouping game using dice
  • Draw pictures showing how regrouping works
  • Sing a BibleMouse math song about place value

Ready for Tomorrow?

Great job completing today's lesson!

Continue to Day 43 →Back to Math