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Distinguish between a two-dimensional shape’s defining (e.g., number of sides) and non-defining attributes (e.g., color).
1.ATO.7 Understand the meaning of the equal sign as a relationship between two quantities (sameness) and determine if equations involving addition and subtraction are true.
1.ATO.8 Determine the missing number in addition and subtraction equations within 20.
Partition two-dimensional shapes (i.e., square, rectangle, circle) into two or four equal parts.
Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases: A. 10 can be thought of as a bundle of ten ones — called a “ten.” B. The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones. C. The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones).
Use nonstandard physical models to show the length of an object as the number of same size units of length with no gaps or overlaps.
Apply Commutative and Associative Properties of Addition to find the sum (through 20) of two or three addends.
Education Galaxy’s SC CCRS mastery and SC READY test preparation program provides online assessment and practice for students in Grades K-6 to help build mastery towards the South Carolina College and Career-Ready Standards. Our unique online program is easy to use and enjoyable for both teachers and students. Students work on their Study Plans practicing important concepts while teachers pull formative assessment reports to identify the strengths and weaknesses of their classroom and individual students.