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Winter Progress Monitoring & Instructional Strategies for 1.NBT.2
Understand place value.
2. Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:
a. 10 can be thought of as a bundle of ten ones — called a "ten."
b. The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones.
c. The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones).
Present student with some cubes. Ask the student how many groups of 10 do you think you can make? Have student check and see how many 10's they can make and ask how many groups of 10 did you make and how many left overs.
Van de Wall Volume One, activity 5.2, Groups of 10
Kathy Richardson, Book 3 Place Value, Multiplication, and Division Activity 1-9
Look for activities Add tens and ones with snap cubes & Build a train under 1.NBT.2 - working on place value with 10’s and 1’s