Math: Joining and Separating Quantities

Suggested Time Frame: 30 Instructional Days


Focus TEKS

Number Relationships

  • K.2I compose and decompose numbers up to 10 with objects and pictures.

Joining and Separating Quantities

  • K.3A model the action of joining to represent addition and the action of separating to represent subtraction
  • K.3B solve word problems using objects and drawings to find sums up to 10 and differences within 10
  • K.3C explain the strategies used to solve problems involving adding and subtracting within 10 using spoken words, concrete and pictorial models, and number sentences

Personal Financial Literacy

  • K.9 Personal financial literacy. The student applies mathematical process standards to manage one’s financial resources effectively for lifetime financial security. The student is expected to:
    • K.9A identify ways to earn income
    • K.9B differentiate between money received as income and money received as gifts
    • K.9C list simple skills required for jobs
    • K.9D distinguish between wants and needs and identify income as a source to meet one’s wants and needs
Numeracy TEKS


  • K.2D recognize instantly the quantity of a small group of objects [10 or less in this unit] in organized and random arrangements

Counting Patterns

  • K.5 The student is expected to recite numbers up to at least 100 [80 in this unit] by ones and tens beginning with any given number
Spiral Review TEKS

Comparing Quantities

  • K.2E generate a set using concrete and pictorial models that represents a number that is more than, less than, and equal to a given number up to 20 [at least 10 in this unit]
  • K.2F generate a number that is one more than or one less than another number up to at least 20 [10 in this unit]
  • K.2G compare sets of objects up to at least 20 [10 in this unit] in each set using comparative language
  • K.2H use comparative language to describe two numbers up to 20 [at least 10 in this unit] presented as written numerals
  • RRISD K.2A Use language, including before and after, forward and backward, and left and right, to describe relative position in a sequence of events or objects

Comparing Measurable Attributes

  • K.7A give an example of a measurable attribute of a given object, including length, capacity, and weight
  • K.7B compare two objects with a common measurable attribute to see which object has more of/less of the attribute and describe the difference