• Counting & Cardinality (CC)
  • Operations & Algebraic Thinking (OA)
    • Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from.

  • Number & Operations in Base Ten (NBT)
    • Work with numbers 11-19 to gain foundations for place value.

      • Compose and decompose numbers from 11 to 19 into ten ones and some further ones, 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.

  • Measurement & Data (MD)
    • Describe and compare measurable attributes.

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

      • 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 describe one child as taller/shorter.

    • Classify objects and count the number of objects in each category.

      • Classify objects into given categories; count the numbers of objects in each category and sort the categories by count. (Limit category counts to be less than or equal to 10.)

  • Geometry (G)
    • Identify and describe shapes (squares, circles, triangles, rectangles, hexagons, cubes, cones, cylinders, and spheres).

    • Analyze, compare, create, and compose shapes.

      • 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 vertices/“corners”) and other attributes (e.g., having sides of equal length).

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

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