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# Mental Math Strategies for Learning Addition Doubles-Facts

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Presentation (Powerpoint) File

1 MB|47 Slides
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This is the second of 11 animated Power Points that strategically teach the addition facts using the relation-based strategies inspired by John A. Van de Walle. The series introduces students to the strategies for learning their addition facts based on relationships of number combinations. This approach to teaching facts eliminates the need for students to "memorize" 120 facts. Through concept development and understanding of the number system, students only have to memorize, understand, and apply these NINE strategies to master their addition facts up to 20 (10 + 10). Nine is far less than 120!

The first 12 slides of this PowerPoint (the second in a series of 11) introduces students to pictures that give a visual image of the double facts. Through practice, students will begin to associate each fact with its picture. Eventually, the visual representation of the number fact is embedded in the mind, enabling the student to quickly retrieve the sum when seeing a double-fact. The Slideshow moves from showing the pictorial representation with the numerical, to just showing the addition fact and asking students to “think” of the picture and relating it to the answer.

This approach to learning “the doubles” is supported and documented in many of John A. Van de Walle’s books on teaching student-centered mathematics. I introduce the strategy to students, then post the pictures around the room. Additionally, I use the PowerPoint as a daily review. The sequential order of the slides, from a pictorial representation to a symbolic, helps students understand how to use these mental images in memorizing the facts. I often present the slide show to students on the Smart Board, allowing it to loop throughout the day, giving students constant exposure to the pictures and facts. Since the slide show does not have sound, students who finish their work early have something to watch.
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47 Slides
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