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CCSS.MATH.CONTENT.2.OA.B.2      Add & Subtract within 20. Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.

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Students should know numbers 0-20
Students should know how to add and subtract within 10

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Students will be grouped and each group will be given a set of playing cards numbers 1-10. The cards will be shuffled. Students will have a worksheet with blanks for the numbers and some problems will be addition, and some will be subtraction. The students will write the numbers from the cards they draw and then either add or subtract according to the problem.

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Explain any vocabulary terms and make sure they understand directions. There are not any word problems involved, so they should do well with the visualness of the lesson.

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Depending on the students' abilities, they can either complete work with a group, partner, or alone.

If time allows, I can work with students in a group at the back table.

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I will actively move around the classroom observing and helping students check their answers. At the end of the activity I will work out numerous problems on the board using problems the students created. I will collect the worksheets and grade them individually to double check answers, and if need be address any missed problems when we come back together the next day.

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Students will be asked to complete a worksheet that has both addition and subtraction problems. When they are done with the worksheet, they may color in the answer using the key to reveal the hidden picture.