Inviting Parents Into the Classroom
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Inviting Parents Into the Classroom book
Building on pre-place value concepts learned in kindergarten, the first- and second-grade curricula begin to focus on children's understanding of place value. Children's reasoning strategies are built on an understanding of place value, the relationship between addition and subtraction, and the properties of numbers. The challenge with place value concepts is that it is often difficult to assess if children truly understand the concept of place value or if they are following a pattern. Additive reasoning includes the operations of addition and subtraction and engages children in understanding the concepts around these operations. Math researchers have identified four important components in additive relationships: joining, separating, part/part/whole, and compare. The Common Core Standards stress the role of mental math in computation. By second grade, children are expected to fluently add and subtract within 20 using mental math.