Objective: Represent up to 120 objects with a written numeral.
This work with the unit form of numbers to 120 supports students’ understanding of the written numerals 101 through 109, which are the most challenging to write (1.NBT.1). Following students’ work with the unit form of numbers to 120, students then represent a number of objects in Lesson 9, presented concretely and pictorially, with the written numeral (1.NBT.1).
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