1.MATH.2.B

Use concrete and pictorial models to compose and decompose numbers up to 120 in more than one way as so many hundreds, so many tens, and so many ones.

Grade 1 · Texas Essential Knowledge and Skills (TEKS) · TEKS 2012

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Vocabulary
concrete modelspictorial modelsnumbershundredstensones
Skills
  • compose (numbers up to 120 in more than one way using hundreds, tens, and ones) #dok2
  • decompose (numbers up to 120 in more than one way using hundreds, tens, and ones) #dok2
  • use (concrete and pictorial models to represent numbers up to 120) #dok1
  • identify (different ways to break apart and put together numbers up to 120) #dok2
Learning Targets
  • I can use concrete and pictorial models to show numbers up to 120. #dok1
  • I can represent numbers up to 120 as so many hundreds, tens, and ones using objects or drawings. #dok1
  • I can compose numbers up to 120 in more than one way using hundreds, tens, and ones. #dok2
  • I can decompose numbers up to 120 in more than one way using hundreds, tens, and ones. #dok2
  • I can describe different ways to show a number using hundreds, tens, and ones. #dok2
Big Ideas
  • Numbers can be created (composed) and broken apart (decomposed) in many ways using hundreds, tens, and ones.
  • Concrete and pictorial models help us understand place value and different ways to represent numbers.
Essential Questions
  • How can you use objects or drawings to show a number in different ways?
  • Why does it help to break a number into hundreds, tens, and ones?
  • What are some ways you can make the same number using hundreds, tens, and ones?
  • How can place value help you find new ways to put numbers together or break them apart?
  • How does using models make it easier to understand how numbers work?