📖

Number Line Subtraction

Subtracting with Teen Numbers

Day 128of 180
Week 26of 36
25Minutes
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🖨️ Download Worksheet (PDF)🧮 Download Math Practice (PDF)
🎯 What You'll Learn

Learning Objectives

1

Understand how to use a number line to subtract teen numbers

2

Demonstrate backward hopping on a number line to subtract

3

Develop patience and careful counting skills

📖 Scripture Connection

Proverbs 22:6

“Train up a child in the way he should go, and when he is old he will not depart from it.”

— Proverbs 22:6 (WEB)

Just as we carefully guide children in learning math skills, God guides us in learning life skills

📦 Materials Needed

  • Large floor number line (can be made with painter's tape)
  • Colored markers or stickers
  • Small bean bags or soft markers
  • BibleMouse Resource Guide: Grade K Math
📚 Step-by-Step

Lesson Plan

1Opening (3 min)

Gather students and review previous day's subtraction strategies

💭 Review Question: Can you remember how we subtracted from teen numbers yesterday?
2Teaching (8 min)

Introduce number line subtraction using visual demonstrations

📌 Key Talking Points:
  • A number line helps us see how subtraction works
  • We'll 'hop backward' to subtract numbers
  • Each hop represents taking away one number
💬 Discussion Questions:
  • What do you think happens when we hop backward?
  • How many hops do we need to subtract?
3Activity: Number Line Hop Subtraction (10 min)
hands-on

Students physically hop backward on a number line to subtract

📝 Instructions:
  1. Create a large number line on the floor
  2. Start at a teen number like 15
  3. Hop backward to subtract smaller numbers
  4. Count and announce the final number
🔄 Variations:

Simpler: Use smaller subtraction numbers (1-3)

Challenge: Introduce subtraction problems up to 5 hops

4Closing (3 min)

Recap number line subtraction strategy

📝 Review Questions:
  • What did we learn about subtracting on a number line?
  • Show me how you hop backward to subtract!

Coming up: Tomorrow we'll solve fun subtraction word problems using our new number line skills

👨‍👩‍👧 For Parents

Teaching Notes

📚 Background:

Number line subtraction helps children visualize abstract math concepts

💡 Teaching Tips:
  • Be patient and make learning fun
  • Encourage physical movement during math
  • Praise effort over perfect answers
🤔 Common Struggles:

Children might get confused counting backward

👀 Signs of Understanding:

Consistent understanding of backward hopping and counting

🚀 Want More?

Extension Activities

  • Create a home number line using painter's tape
  • Practice number line subtraction with board games
  • Use BibleMouse Printables Library for additional worksheets

Ready for Tomorrow?

Great job completing today's lesson!

Continue to Day 129 →Back to Math