8. Open number lines for subtraction - take away and difference decimals (levels 5 and 6)
Using Open Number Lines
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6m 18s
Peter Sullivan introduces a video on addition and subtraction using open number lines, specifically for upper primary levels. He highlights the importance of place value and mental arithmetic. The session covers subtraction as both takeaway and difference, demonstrating various flexible methods. Sullivan explains decimal representation and the significance of place value, showcasing different approaches to subtraction and the process of finding differences.
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10. Open number lines for fraction su...
Peter Sullivan explains how to use an open number line to teach subtraction of fractions. He highlights various methods for representing subtraction and the importance of flexibility in approaches. The process involves jumping down from numbers and recognizing different calculation methods. Throu...
