Fact Family Fun: Adding and Subtracting with Dominoes!

Math Grades 1st Grade 5:43 Video
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Lesson Description

Learn about addition and subtraction fact families using dominoes. Discover how numbers are related and build math skills!

Video Resource

Addition and Subtraction Fact Families

Ms Gehrman

Duration: 5:43
Watch on YouTube

Key Concepts

  • Fact families consist of related addition and subtraction facts.
  • The commutative property of addition (turnaround facts).
  • The relationship between addition and subtraction.

Learning Objectives

  • Students will be able to identify the three numbers that belong to a fact family.
  • Students will be able to write four related addition and subtraction facts for a given fact family.
  • Students will understand the commutative property of addition.

Educator Instructions

  • Introduction (5 mins)
    Begin by reviewing addition and subtraction. Ask students what they know about adding and subtracting. Introduce the term 'fact family' and explain that it's like a family of numbers that are related through addition and subtraction, just like the video shows.
  • Video Viewing (5 mins)
    Play the Ms. Gehrman video: 'Addition and Subtraction Fact Families.' Emphasize the definition of a fact family, the 'turnaround facts' concept, and the relationship between addition and subtraction within a fact family.
  • Domino Fact Family Exploration (15 mins)
    Explain that dominoes can help discover fact families. Demonstrate the example from the video using a real domino. Count the dots on each side of the domino and write the corresponding addition and subtraction facts. Emphasize starting subtraction problems with the largest number in the fact family.
  • Independent Practice (15 mins)
    Provide students with domino worksheets (similar to the video's assignment). Have them work independently or in pairs to record the four facts for each domino. Circulate to provide support and answer questions.
  • Wrap-up (5 mins)
    Review the concept of fact families and the commutative property of addition. Ask students to share their favorite part of the activity. Collect the worksheets for assessment.

Interactive Exercises

  • Domino Matching Game
    Create a set of cards with domino images and another set of cards with corresponding fact family equations. Students match the dominoes to their correct fact family equations.

Discussion Questions

  • What is a fact family?
  • How are addition and subtraction related in a fact family?
  • Why do we always start with the biggest number when subtracting in a fact family?

Skills Developed

  • Addition and subtraction fluency
  • Understanding the relationship between addition and subtraction
  • Problem-solving
  • Critical thinking

Multiple Choice Questions

Question 1:

Which numbers are in the fact family for 3 + 4 = 7?

Correct Answer: 3, 4, and 7

Question 2:

What is a 'turnaround fact'?

Correct Answer: When you switch the numbers you are adding

Question 3:

If you know 5 + 2 = 7, what is another addition fact in the same family?

Correct Answer: 2 + 5 = 7

Question 4:

In a fact family, which number do you start with when you subtract?

Correct Answer: The biggest number

Question 5:

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

Correct Answer: 2 - 8 = 6

Question 6:

What is the missing number: 4 + ___ = 9 if the fact family is 4, 5, and 9

Correct Answer: 5

Question 7:

Which symbol means 'equals'?

Correct Answer: =

Question 8:

Dominoes help us learn about...

Correct Answer: Fact Families

Question 9:

What is an operation?

Correct Answer: A way to solve a math problem

Question 10:

Which of these is NOT an operation

Correct Answer: Counting

Fill in the Blank Questions

Question 1:

A fact family has _____ numbers.

Correct Answer: three

Question 2:

3 + 2 = 5 and 2 + 3 = 5 are called ________ facts.

Correct Answer: turnaround

Question 3:

Fact families help us understand how adding and _______ are related.

Correct Answer: subtracting

Question 4:

In the fact family for 1, 4, and 5, the biggest number is ____.

Correct Answer: 5

Question 5:

A fact family uses ______ operations.

Correct Answer: two

Question 6:

In math, adding is called _______.

Correct Answer: addition

Question 7:

In math, taking away is called _______.

Correct Answer: subtraction

Question 8:

We use ________ to help us learn fact families.

Correct Answer: dominoes

Question 9:

The equal sign means two sides are the ________.

Correct Answer: same

Question 10:

Fact families have _______ math facts.

Correct Answer: four

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.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.) 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.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.

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