Writing Number Sentences: Let's Tell Addition Stories!

Math Grades 1st Grade 5:54 Video
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Lesson Description

Learn how to write number sentences for addition stories with 'Some, Some More' scenarios. Discover how to turn word problems into math equations!

Video Resource

Grade 1: Math Lesson #25 Writing Number Sentences For Addition Stories

The Eagle's Nest - Our Online Classroom

Duration: 5:54
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Key Concepts

  • Addition as combining groups
  • Writing number sentences to represent stories
  • The meaning of the plus (+) and equal (=) signs
  • Understanding 'Some, Some More' addition stories

Learning Objectives

  • Students will be able to translate simple addition word problems into number sentences.
  • Students will be able to identify the parts of a number sentence (addends, sum, plus sign, equal sign).
  • Students will be able to solve number sentences created from addition stories.

Educator Instructions

  • Introduction (5 mins)
    Begin by asking students what they know about addition. Review the meaning of the plus sign (+) and the equal sign (=). Explain that today they will learn how to write number sentences for stories.
  • Video Viewing (5 mins)
    Show the video 'Grade 1: Math Lesson #25 Writing Number Sentences For Addition Stories'. Encourage students to pay attention to how the stories are turned into math problems.
  • Guided Practice (10 mins)
    After the video, work through several examples together. Present simple 'Some, Some More' addition stories and guide students in writing the corresponding number sentences on the board. For instance: 'I had 3 apples. My friend gave me 2 more. How many apples do I have?' (3 + 2 = 5)
  • Independent Practice (10 mins)
    Provide students with worksheets containing similar addition stories. Have them independently write the number sentences for each story and solve them. Provide assistance as needed.
  • Wrap-up (5 mins)
    Review the key concepts learned in the lesson. Ask students to share their favorite addition story and the number sentence they created for it.

Interactive Exercises

  • Story Time Math
    Read simple addition stories aloud and have students act them out using counters or blocks. Then, guide them in writing the number sentence that matches the story.
  • Number Sentence Match
    Create cards with addition stories and separate cards with corresponding number sentences. Have students match the stories to the correct number sentences.

Discussion Questions

  • What does the plus sign (+) mean?
  • What does the equal sign (=) mean?
  • Can you think of a time when you added things together?

Skills Developed

  • Problem-solving
  • Critical thinking
  • Number sense
  • Mathematical communication

Multiple Choice Questions

Question 1:

What does the plus sign (+) mean?

Correct Answer: To add

Question 2:

What does the equal sign (=) mean?

Correct Answer: The same as

Question 3:

If you have 2 cats and you get 1 more, how many cats do you have in all?

Correct Answer: 3 cats

Question 4:

Which number sentence shows 4 + 3 = 7?

Correct Answer: 4 + 3 = 7

Question 5:

What is a number sentence?

Correct Answer: A math problem

Question 6:

Which number comes after the plus sign in 5 + 2?

Correct Answer: 2

Question 7:

What does 'some, some more' mean in math?

Correct Answer: Adding more

Question 8:

If you have 6 cookies and you get 4 more cookies, how many cookies do you have?

Correct Answer: 10

Question 9:

In the number sentence 1 + 1 = 2, what is the number 2?

Correct Answer: Sum

Question 10:

What sign do we use when we put things together?

Correct Answer: +

Fill in the Blank Questions

Question 1:

We use the _______ sign (+) when we add.

Correct Answer: plus

Question 2:

The _______ sign (=) means 'the same as'.

Correct Answer: equal

Question 3:

2 + 3 = _____

Correct Answer: 5

Question 4:

When we add, the answer is called the _____

Correct Answer: sum

Question 5:

If I have 4 flowers and you give me 1 more, I have _____ flowers.

Correct Answer: 5

Question 6:

5 + 0 = _____

Correct Answer: 5

Question 7:

Putting things together means we _______.

Correct Answer: add

Question 8:

A number _______ shows how numbers are related.

Correct Answer: sentence

Question 9:

If you have 3 pencils and get 2 more, the number sentence is 3 + 2 = _____.

Correct Answer: 5

Question 10:

In a number sentence, the numbers we add together are called _______.

Correct Answer: addends

Educational Standards

CCSS.Math.Content.1.OA.A.1:Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem. CCSS.Math.Content.1.OA.D.7:Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false. For example, which of the following equations are true and which are false? 6 = 6, 7 = 8 - 1, 5 + 2 = 2 + 5, 4 + 1 = 5 + 2. CCSS.Math.Content.1.OA.D.8:Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = _ - 3, 6 + 6 = _.

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