Composing and Decomposing Numbers Unit

The Composing and Decomposing Numbers Unit involves conceptualizing whole numbers in terms of their parts which builds flexible thinking, number sense and the foundation for addition and subtraction. Questions to answer might include—

• How many different ways can you show five with the fingers on both hands?
   
• How will you know when you have found all the ways?
   
• Why is it important to find different combinations (ways) to build ten?
   
• Did you see any patterns when you showed the combinations for ___?

K.CC.B.5

Count to answer "how many?" questions about as many as 20 things arranged in a line, a rectangular array, or a circle, or as many as 10 things in a scattered configuration; given a number from 1-20, count out that many objects.

Composing and Decomposing Numbers Unit

The Composing and Decomposing Numbers Unit involves conceptualizing whole numbers in terms of their parts which builds flexible thinking, number sense and the foundation for addition and subtraction. Questions to answer might include:

• How many different ways can you show five with the fingers on both hands?
   
• How will you know when you have found all the ways?

TEKS standards covered: K.2E, K.2F, K.2G, K.2H