Lesson Plan

Fact Family Triangles

This hands-on lesson will get students thinking and talking about how the numbers in fact families are related. Use alone or with the lesson plan **Fact Family Trees.**
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This lesson can be used as a pre-lesson for the Fact Family Trees lesson plan.
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This lesson can be used as a pre-lesson for the Fact Family Trees lesson plan.

Objectives

Academic

Students will be able to write related addition and subtraction facts within 20.

Language

Students will be able to describe how the numbers in a fact family are related with content-specific vocabulary using visual and partner support.

Introduction

(3 minutes)
Make Your Own Fact Family TrianglesVocabulary Cards: Fact Family TrianglesTeach Background Knowledge TemplateWrite Student-Facing Language Objectives Reference
  • Draw a triangle on the board, and ask students what shape it is.
  • Write the numbers 15, 7 and 8 inside the corners of the triangle, with 15 in the top corner.
  • Ask students to turn and talk to a partner about what they notice about the numbers. Provide the sentence frame, “I notice ________.”