**Mathematics**

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**COUNTING and CARDINALITY**

1. Understand the relationship between numbers and quantities; connect counting to cardinality.

a. When counting objects, say the number names in the standard order, pairing each object with one and only one

number name and each number name with one and only one object.

b. Understand that the last number name said tells the number of objects counted. The number of objects is the same regardless of their arrangement or the order in which they were counted.

c. Understand that each successive number name refers to a quantity that is one larger.

2. Count to answer “how many?” questions about as many as 20 things arranged in a line, a rectangular array, or a circle, or

as many as 10 things in a scattered configuration; given a number from 1–20, count out that many objects

3. Count to 100 by ones and by tens.

4. Write numbers from 0 to 20. Represent a number of objects with a written numeral 0-20 (with 0 representing a count

of no objects).

5. Identify whether the number of objects in one group is greater than, less than, or equal to the number of objects in another group, e.g., by using matching and counting strategies.

6. Compare two numbers between 1 and 10 presented as written numerals.

7. Count forward beginning from a given number within the known sequence (instead of having to begin at 1)

**GEOMETRY**

1. Describe objects in the environment using names of shapes, and describe the relative positions of these objects using terms such as above, below, beside, in front of, behind, and next to.

2. Correctly name shapes regardless of their orientations or overall size.

3. Compose simple shapes to form larger shapes. For example, “Can you join these two triangles with full sides touching to make a rectangle?

4. Identify shapes as two-dimensional (lying in a plane, “flat”) or three- dimensional (“solid”).

5. Analyze and compare two- and three- dimensional shapes, in different sizes and orientations, using informal language to describe their similarities, differences, parts (e.g., number of sides and /"corners") and other attributes (e.g., having sides of equal length)

6. Model shapes in the world by building shapes from components (e.g., sticks and clay balls) and drawing shapes.

**MEASUREMENT AND DATA**

1. Describe measurable attributes of objects, such as length or weight. Describe several measurable attributes of a single object.

2. Directly compare two objects with a measurable attribute in common, to see which object has “more of”/“less of” the attribute, and describe the difference. For example, directly compare the heights of two children and one child as taller/shorter.

3. Classify objects into given categories; count the numbers of objects in each category and sort the categories by count.

**OPERATIONS AND ALGEBRAIC THINKING**

1. Represent addition and subtraction with objects, fingers, mental images, drawings2, sounds (e.g., claps), acting out situations, verbal explanations, expressions, or equations.

2. Decompose numbers less than or equal to 10 into pairs in more than one way, e.g., by using objects or drawings, and record each decomposition by a drawing or equation (e.g., 5 = 2 + 3 and 5 = 4 + 1)

3. For any number from 1 to 9, find the number that makes 10 when added to the given number, e.g., by using objects or drawings, and record the answer with a drawing or equation.

4. Solve addition and subtraction word problems, and add and subtract within 10, e.g., by using objects or drawings to represent the problem.

5. Fluently add and subtract within 5.

**NUMBERS BASE TEN**

1. Compose and decompose numbers from 11 to 19 into ten ones and some further, e.g., by using objects or drawings, and record each composition or decomposition by a drawing or equation (e.g., 18 = 10 + 8); understand that these numbers are composed of ten ones and one, two, three, four, five, six, seven, eight, or nine ones.