# 5. Writing numbers to show how many on dot cards (FP)

teaches Common Core State Standards CCSS.Math.Content.K.CC.A.3 http://corestandards.org/Math/Content/K/CC/A/3
teaches Common Core State Standards CCSS.Math.Content.K.CC.B.4a http://corestandards.org/Math/Content/K/CC/B/4/a
teaches Common Core State Standards CCSS.Math.Practice.MP6 http://corestandards.org/Math/Practice/MP6

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Lesson objective: Count any number of objects (within 20) and represent the objects with a written numeral.

This lesson helps to build fluency with writing numbers from 0 to 20 and representing a number of objects with a written numeral.  Dot cards are used here because they provide students an opportunity to develop counting strategies to help them organize the counting process. Since counting scattered arrangements is more challenging, students may choose to use grouping strategies to move the objects into an organized pattern. This work helps students develop mental images for relating quantity to numerals.

Students engage in Mathematical Practice 6 (Attend to precision) as they express how they know that their count is accurate. Students communicate precisely with others and try to use clear mathematical language when discussing their reasoning. Students are provided opportunities to justify why their answer represents a quantity just counted by answering questions such as "How do you know?" and "How did you figure that out?"

Key vocabulary:

• numeral
• group

Special materials needed:

• Dot cards
• Recording Sheet
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