Category Archives: Common Core Standards Grade 2

Place Value Notation already depends on multiplication

23 = 2 * A + 3 where A = 10. Place value notation is a way of writing compactly multiplications and additions. Children are taught place value notation in grade K.  They are taught multiplication in grade 2.  This … Continue reading

Posted in Common Core Logical Inconsistencies, Common Core Standards Grade 2, Common Core Standards Grade K, Common Core Standards Math | Leave a comment

Is Place Value Notation already Algebraic Thinking?

Place value notation and related algorithms are a complicated set of machinery based on the associative, and commutative laws of addition and multiplication. 21 = 2 * 10 + 1 The manipulation of such expressions is by the laws of … Continue reading

Posted in Algebraic Laws, Arithmetic Laws, Arithmetic's Relation to Algebra, CC Standards Grade 2 Operations and Algebraic Thinking, Common Core Standards Grade 2, Common Core Standards Math, Place Value Notation | Leave a comment