Reteaching Math - Addition & Subtraction
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Some students may have difficulty grasping math concepts the first time they are taught. When this happens, teachers will need to use different approaches to reteach and reach these struggling learners. Every lesson begins with a problem designed to pique students’ interest. Employing an arsenal of various instructional approaches that use manipulatives, games, practice pages, literature connections, and more, lessons ensure that students master addition and subtraction. Reteaching Math is a surefire way to help every student make the grade. 96 pages. Grades 2-4.
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CCSS Product Alignment
Math Grade 2
2.OA.2 Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.
2.NBT.5 Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
2.NBT.6 Add up to four two-digit numbers using strategies based on place value and properties of operations.
2.NBT.7 Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.
Math Grade 3
3.NBT.2 Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.