Lesson Plan:
Where is my Fact Family?
Learning Objectives
Students will be able to identify fact families and understand and the commutative property for addition and subtraction.
Introduction
(10 minutes)
- Begin the lesson by reviewing the concept of a fact family.
- Explain that a fact family consists of all of the addition and subtraction combinations that two numbers and their sum can have. For example, 1 + 2 = 3, 2 + 1 = 3, 3 - 1 = 2, and 3 - 2 = 1 make up a fact family.
- Write on the board three numbers that can form a fact family (e.g. 3, 4, and 7).
- Ask students to construct the fact family formed by the numbers. After a few minutes, have them compare answers with one another.
- Call on volunteers to write down each of the four equations in the family. Make clarifications as needed.
Explicit Instruction/Teacher Modeling
(10 minutes)- Direct attention to the large dominoes posted around the classroom. Let the class know that these dominoes will be involved in an activity.
- Give each student an equation strip from Set 1. Explain that students will need to find the dominoes that match their equations.
- Demonstrate the exercise by selecting a strip, reading it aloud, then moving to its corresponding domino.
Guided Practice/Interactive Modeling
(15 minutes)- Give students about five minutes to find their dominoes. Once they finish gathering, there should be multiple students at each domino, with the exception of the 0 family domino.
- Ask students how many facts they think are in a fact family. Have them look around at how many students are at each domino before they respond.
- Explain that fact families usually contain four equations. When the addends of the family are the same, they contain two. The only exception is the 0 family, which only contains one.
- If there's enough time remaining, allow students to repeat the activity with equations from Set 2.
Independent Working Time
(10 minutes)- Have each student select one or two of the dominoes in the room.
- Ask students to copy down their dominoes on a sheet of paper and write down the fact families for those dominoes.
Differentiation
- Enrichment: Advanced students can be asked to complete the second round of the exercise without talking. Doing so pushes them to find the correct domino without getting help from one another.
- Support: Struggling students can be asked to find members of their fact families before searching for their dominoes. Once the family members are found and groups are formed, students can work together to look for the dominoes.
Assessment
(10 minutes)- Observe students as they complete the fact family exercise, making mental notes of common struggles that they face.
- Collect and evaluate the sheets that students worked on during Independent Working Time in order to assess their overall comprehension of the lesson content.
Review and Closing
(5 minutes)- Go over the definition of fact family once again.
- Allow students to ask questions and give comments about the lesson.
Guided Lessons are a sequence of interactive digital games, worksheets, and other activities
that guide learners through different concepts and skills.
They keep track of your progress and help you study smarter, step by step.
Guided Lessons are digital games and exercises that keep track of your progress and help you study smarter, step by step.
Fluency with subtraction is one of the foundations of the first grade math curriculum. This guided lesson on subtraction was designed by our team of curriculum experts to reinforce first graders' understanding of subtraction, as well as boost their confidence with this operation. When finished with the lesson, kids can find extra opportunities to practice subtraction with the accompanying subtraction worksheets.
Fluency with subtraction is one of the foundations of the first grade math curriculum.
This lesson includes printable activities:
Download All (5)
Song: What's Missing? Subtraction Song
Game: Subtraction Pizza Party
Game: Subtraction Hopper
Game: Ski Race: Subtraction Within 10
Game: Secret Agent Subtraction
Game: Asteroid Subtraction
Game: Swamp Subtraction
Story: Magical Subtraction
