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Lesson Plan

Marbles In a Jar: Connected Solution Paths

teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1
teaches Common Core State Standards CCSS.Math.Content.K.OA.A.3 http://corestandards.org/Math/Content/K/OA/A/3
teaches Common Core State Standards CCSS.Math.Practice.MP4 http://corestandards.org/Math/Practice/MP4
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Students will understand that the number 10 can be decomposed into different pairs. The structure of this task requires students to listen to a story problem and to provide as many combinations as possible through words, pictures, objects, and/or equations. The suggested public discussion of student work shows connected solution paths. The public discussion will lead to understanding multiple ways to approach decomposing a number (through objects, drawings, number, and equations). Students need to understand how to decompose numbers in order to add fluently within 10. The paths are connected conceptually. In Kindergarten, students will most likely have a range of understanding and ways to solve a problem. Discussing this work publicly is important because this leads to students understanding how to compose and decompose numbers and provides a foundation for addition and subtraction concepts. Three pieces of work are shown. The first shows a response using drawings, numbers, words, and an equation. This student work shows only one combination of decomposing 10. The second shows a response using drawings. The student used red and blue crayons to draw the marbles and numbers to represent the different 'pairs' equaling 10. The final piece shows a response using drawings and equations. The student made similar drawings as the second response but also included equations for each combination. All student work shown also used ten frames and red and blue cubes to represent their combinations. All of the responses are connected and display different ways of arriving to finding some of the combinations that equal 10. This Student Work Discussion Plan was created by a member of the 2015 Delaware Dream Team. Special Materials: ten frames, red and blue cubes, red and blue crayons
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