Chapter 18:

Subtraction Stories

Kindergarten: Chapter 18 Outline

Week 29 - Week 30

Essential Questions:

    • How can you tell what number is greater than?
    • How can you tell what number is less than?
    • How can you tell if two numbers are equal?
    • What do numbers represent?

Content:

Students will know and understand:

    • equal to, less than, and greater than.
    • the relationship between numbers and quantities.

Skills:

Students Will:

    • count and match objects that are less than and greater than.
    • use one to one correspondence when counting objects.
    • count objects in a variety of arrangements.
    • count to find out what is one more than any quantity.
    • represent addition and subtraction in a variety of ways (ex. fingers, manipulatives, drawings)
    • solve addition and subtraction word problems using a variety of objects and drawings.​

Assessment

Chapter 18 Assessment: Subtraction Stories

Formative Test: Common

Upon completion of Unit 18:

  • K.CC.A.1. Count to 100 by ones and by tens.
  • K.CC.A.3. 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).
  • K.CC.B.4. Understand the relationship between numbers and quantities; connect counting to cardinality.
  • K.CC.B.4a. 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.
  • K.CC.C.6. 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.
  • 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.
  • K.OA.A.2. Solve addition and subtraction word problems, and add and subtract within 10, e.g., by using objects or drawings to represent the problem.
  • K.OA.A.3. 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).
  • MP.1. Make sense of problems and persevere in solving them.
  • MP.2. Reason abstractly and quantitatively.
  • MP.4. Model with mathematics.