This is the third of four lessons from the unit "Addition and Subtraction Strategies." Review with students that a doubles fact is a number sentence that repeats the same addend, such as 3 + 3 = 6 or 8 + 8 = 16. Using connecting cubes, provide students opportunities to practice combining groups with the same number. Begin this lesson by reading the book, Two of Everything by Lily Toy Hong. Aligned to Common Core State Standard: 2.OA.2
Doubles - Addition and Subtraction Strategies Unit
Subject
Math — Operations and Algebraic Thinking
Grade Level
Grades K-2
Resource Type
Activity, Assessment, Handout, Lesson Plan
Standards Alignment
Common Core State Standards
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Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.
