• TOC
  • Courses
  • Blog
  • Twitch
  • Shop
  • Search
    • Courses
    • Blog
    • Subreddit
    • Discord
    • Log in
    • Sign up
    • ▾Kindergarten
      • ▸Counting and place value
        • •Counting from pictures, oral response
        • •Counting objects by property
        • •Counting to 100 by ones
        • •Counting to 100 by tens
        • •Counting on by ones or tens
        • •Understanding zero
        • •Write numbers
        • •Counting objects, line or rectangular array
        • •Counting objects, scattered and circular arrangements
        • •Compare by matching or counting
        • •Compare written numerals
        • •Counting by category
        • •Count, represent and write teen numbers
      • ▾Addition and subtraction
        • •Add and subtract within 5
        • •Composing and decomposing within 10
        • •Addition, missing number word problems
        • •Addition and subtraction, concrete and visual
        • •Add and subtract within 10
      • ▸Measurement and geometry
        • •Compare measurements without tools
        • •Measurement tools
        • •Naming shapes in the real-world
        • •Naming shapes regardless of orientation or size
        • •Relative positions
        • •Identify shapes and solids
        • •Compare attributes of shapes and solids
        • •Build solids
        • •Compose 2D shapes
        • •Simple repeating patterns
        • •Growing patterns
     › Kindergarten › Addition and subtraction

    Addition and subtraction, concrete and visual

    Add and subtract with objects. Fingers, Unifix cubes, etc. Then move on to adding and subtracting with pictures. Identify mistakes in representation. If given 2 + 3 and a drawing of 1 + 3, students should be able to identify the mistake in both ways. For example, given the Unifix cubes *|***, Becky said it represents 2 + 3. Is she correct? Going the other way, Becky was told to represent 2 + 3, so Becky made *|*** with Unifix cubes. Is she correct?

    Watch these Khan Academy videos:

    • Add and subtract: pieces of fruit
    • Addition and subtraction within 10

    Do these Khan Academy exercises:

    • Add within 10
    • Subtract within 10

    One goal of kinder addition is to have them move between 2 + 3, the representation of 2 + 3 with Unifix cubes, the representation of 2 + 3 with a drawing, perhaps by drawing circles, and word problems, such as two wolves were howling, three more joined them, how many wolves are now howling?

    K.OA.A.1: Represent addition and subtraction with objects, fingers, mental images, drawings, sounds (e.g., claps), acting out situations, verbal explanations, expressions, or equations. Include groups with up to ten objects.

    Additional lessons and practice problems