19063424_eaching_Elementary_Mathematics__on_is_Found_in_U_S__Curriculum
[Phase] Partitioning [Description] Using additive thinking or thinking in tens and ones. Counting Count by tens starting with any number Skip count while keeping track of number of groups counted. Number Relationships Use part-part-whole relationships without seeing objects Know any number is made with other numbers Understand and use inverse operations for addition and subtraction Compare whole numbers using patterns that do not concretely represent amounts (100 charts) Number as Tens and Ones Recognize numbers as tens and ones Combine and separate tens and ones Know 10 more or less for any two-digit number Know place value for two-digit numbers Know and use expanded notation Fractional Understanding · Believe equal halves can look different · Divide numbers into fractions · Know 1/3 is greater than ¼
Late first and second grades
Early Numbers | Strategies for Teaching Elementary Mathematics
Typical Grade in which Instruction is Found in U.S. Curriculum