Click here for the Spanish version: https://youtu.be/mdl_XhghE08

In This Unit of Study…

Students will compose and decompose numbers 1-10 using objects, pictures, and diagrams (number bonds, ten frames, number lines). They will find all the ways the numbers 6-10 can be represented as the sum of two numbers using equations. Students will use tools/drawings to prove an equation is true. When given 1 addend, students will be able to make a ten using manipulatives, models, and equations.

B.E.S.T. Benchmarks:

  • MA.NSO.2.1 Recite the number names of 60 100 by ones and by tens. Starting at a given number, count forward within 100 and backward within 20. 
  • MA.K.AR.1.1 For any number from 1 to 9, find the number that makes 10 when added to the given number.  
  • MA.K.AR.1.2 Given a number from 0 to 10, find the different ways it can be represented as the sum of two numbers.  
  • MA.K.AR.2.1 Explain why addition or subtraction equations are true using objects or drawings. 

Key Concepts:

  • Building fluency when counting to 60 by ones and tens 
  • Compose and decompose numbers 1-10 
  • Make a Ten (when 1 addend is provided) using manipulatives, models, and equations.