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Lesson Plan

Find elapsed time by adding and subtracting

teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1
teaches Common Core State Standards CCSS.Math.Content.3.MD.A.1 http://corestandards.org/Math/Content/3/MD/A/1
teaches Common Core State Standards CCSS.Math.Practice.MP2 http://corestandards.org/Math/Practice/MP2
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Big Ideas: Time can be measured. Time is the duration of an event from its beginning to its end. This lesson builds on students’ work with telling and writing time to the nearest minute. The task builds on using tools such as clock faces and number lines. Students will use their understanding of addition and subtraction to solve problems involving elapsed time. The mathematical concepts in this lesson build towards students’ proficiency as they move from concrete to more abstract thinking and problem solving. Vocabulary: hour, minute, second, elapsed time, event, duration
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