Cupcakes and Math: Exploring Addition and Subtraction!

Math Grades 1st Grade 3:26 Video
Print Lesson Plan Watch Video

Lesson Description

Learn how addition and subtraction are related using a fun cupcake story! Discover fact families and how switching numbers can still lead to the same answer.

Video Resource

Relationship between Addition & Subtraction - 1st Grade Math (1.OA.3)

Boddle Learning

Duration: 3:26
Watch on YouTube

Key Concepts

  • Addition and Subtraction are related.
  • Fact Families: A group of related addition and subtraction equations using the same three numbers.
  • Commutative Property of Addition: Changing the order of addends doesn't change the sum.

Learning Objectives

  • Students will be able to identify the relationship between addition and subtraction.
  • Students will be able to create fact families using a given set of three numbers.
  • Students will be able to solve simple addition and subtraction problems within 10.

Educator Instructions

  • Introduction (5 mins)
    Begin by asking students what they know about addition and subtraction. Briefly review the meaning of each operation. Introduce the concept of a 'fact family' as a group of number sentences that are related.
  • Video Viewing (5 mins)
    Watch the Boddle Learning video: 'Relationship between Addition & Subtraction - 1st Grade Math (1.OA.3)'. Instruct students to pay attention to how Jen uses addition and subtraction to solve her cupcake problem.
  • Discussion (5 mins)
    After the video, discuss the cupcake scenario. Ask students about how Jen used addition and subtraction to figure out how many cupcakes she baked and how many were left. Reinforce the idea that addition and subtraction are related.
  • Fact Family Practice (10 mins)
    Write a fact family on the board using numbers less than 10 (e.g., 2, 3, and 5). Show how to write the two addition and two subtraction equations (2 + 3 = 5, 3 + 2 = 5, 5 - 2 = 3, 5 - 3 = 2). Have students practice creating their own fact families with different sets of numbers. You can use manipulatives like counters or blocks to help them visualize the relationships.
  • Word Problems (10 mins)
    Present simple word problems similar to the cupcake example. For instance: 'Tom has 4 red cars and 2 blue cars. How many cars does Tom have in all? If Tom gives 1 car to his friend, how many cars does he have left?' Encourage students to use fact families to solve the problems.
  • Wrap-up (5 mins)
    Review the key concepts of the lesson: the relationship between addition and subtraction and fact families. Ask students to give examples of how they use addition and subtraction in their daily lives.

Interactive Exercises

  • Cupcake Fact Family Game
    Provide students with a worksheet that has pictures of cupcakes and blank number sentences. Give them a set of three numbers and have them write out the fact family using the cupcake pictures as visual aids.
  • Number Bond Activity
    Use number bonds to visually represent fact families. Provide a number bond template with a large circle (the whole) and two smaller circles (the parts). Give students a set of three numbers and have them fill in the number bond and then write out the related addition and subtraction equations.

Discussion Questions

  • How are addition and subtraction similar? How are they different?
  • Can you think of a time when you used addition and subtraction to solve a problem?
  • What is a fact family? Can you give me an example?

Skills Developed

  • Addition and subtraction fluency within 10
  • Understanding the relationship between addition and subtraction
  • Problem-solving skills

Multiple Choice Questions

Question 1:

What is 2 + 3?

Correct Answer: 5

Question 2:

What is 5 - 2?

Correct Answer: 3

Question 3:

Which number sentence belongs to the fact family of 1, 4, and 5?

Correct Answer: 1 + 4 = 5

Question 4:

If 3 + 4 = 7, what is 7 - 4?

Correct Answer: 3

Question 5:

What number is missing? 6 + ___ = 8

Correct Answer: 2

Question 6:

What number is missing? 9 - ___ = 5

Correct Answer: 6

Question 7:

Which equation is NOT in the fact family of 2, 6, and 8?

Correct Answer: 8 + 2 = 10

Question 8:

Lily has 3 apples. Her friend gives her 2 more. How many apples does Lily have in all?

Correct Answer: 5

Question 9:

Ben has 7 balloons. He gives 3 balloons to his sister. How many balloons does Ben have left?

Correct Answer: 4

Question 10:

Which equation is true?

Correct Answer: 3 + 3 = 6

Fill in the Blank Questions

Question 1:

4 + 1 = ____

Correct Answer: 5

Question 2:

6 - 3 = ____

Correct Answer: 3

Question 3:

In a fact family, the biggest number is always the _____ in subtraction.

Correct Answer: first

Question 4:

3 + ____ = 5

Correct Answer: 2

Question 5:

8 - ____ = 4

Correct Answer: 4

Question 6:

If 2 + 5 = 7, then 7 - 5 = ____

Correct Answer: 2

Question 7:

A group of number sentences using the same three numbers is called a _____ _____.

Correct Answer: fact family

Question 8:

10 - 2 = ____

Correct Answer: 8

Question 9:

If you add two numbers, you can switch them around and the answer will be the ____.

Correct Answer: same

Question 10:

____ + 4 = 9

Correct Answer: 5

Educational Standards

CCSS.Math.Content.1.OA.B.4:Understand subtraction as an unknown-addend problem. For example, subtract 10 - 8 by finding the number that makes 10 when added to 8. CCSS.Math.Content.1.OA.C.6:Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13). CCSS.Math.Content.1.OA.B.3:Apply properties of operations as strategies to add and subtract. (Students need not use formal terms for these properties.) Examples: If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative property of addition.) To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 = 2 + 10 = 12. (Associative property of addition.)

Teaching Materials

Download ready-to-use materials for this lesson:

Student Worksheet Classroom Slides Assessment Quiz Export to Google Docs
Add to Google Classroom

User Actions

Sign in to save this lesson plan to your favorites.

Sign In

Share This Lesson

Related Lesson Plans