What strategies can we use to become quick and accurate with addition and subtraction problems up to 20?
Critical Thinking: Students will critically choose and apply effective strategies for various addition and subtraction problems.
Adaptive Perseverance: Students will explore different strategies and learn from any mistakes, adapting their approach as needed.
Communication: Students will effectively articulate the reasoning behind their chosen strategies and share their problem-solving process.
How does counting on simplify solving addition problems?
In what ways does making ten help us quickly solve addition and subtraction problems?
How can decomposing a number into tens and ones make subtraction easier?
Students will demonstrate fluency in addition and subtraction within 10 and work towards mastery within 20.
Students will apply counting on, making ten, and decomposing numbers as strategies to solve problems.
Students will explain their strategy choice for given problems and discuss its effectiveness.
1.OA.C.6: Add and subtract within 20, demonstrating fluency for addition and subtraction within 10 by using strategies such as counting on; making ten; decomposing a number leading to a ten; and creating equivalent but easier or known sums.
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