# 3. Spill the Beans and Count the Total (C)

teaches Common Core State Standards CCSS.Math.Content.K.CC.A.1 http://corestandards.org/Math/Content/K/CC/A/1
teaches Common Core State Standards CCSS.Math.Content.K.CC.A.2 http://corestandards.org/Math/Content/K/CC/A/2
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7

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Lesson objective: Understand that we can begin counting at a number other than one within a known counting sequence.

Students bring prior knowledge of number names and the count sequence from K.CC.A.1. This prior knowledge is extended to counting forward from a given number other than one as students count within the context of counting beans to determine the total amount in the collection. A conceptual challenge students may encounter is remembering the next number in the counting sequence without starting from one (especially the irregular structure of counting in English between 10 and 20).

The concept is developed through the use of a ten frame, which supports students in their recall of organizing items in order to quickly determine the total.

This work helps students deepen their understanding of operations because as students learn to count from any number in the counting sequence, they are beginning to develop strategies for counting on as method for addition.

Students engage in Mathematical Practice 7 (Look for and make use of structure) as they begin to look for patterns and structures in the number system. They notice a structure in the counting sequence and use that structure to begin counting anywhere along the sequence.

Key vocabulary:

• counting on
• recount

Special materials needed:

• ten frame
• counters
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