Curriculum>Grade 2> Module 2>Topic D: Relate Addition and Subtraction to Length

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Given an object not aligned to zero on a ruler, use the difference between two points to measure the object's length. Represent the concept of "difference" through the subtraction symbol. Given points include numbers between 0 and 25

A. Represent change in length as addition or subtraction

B. Add three measurements to find the total length of a path

C. Count to determine length of an object that isn't aligned to 0 on a ruler

D. Subtract to determine length of an object that isn't aligned to 0 on a ruler

F. Use a tape diagram to solve a +/- word problem involving length

G. Show the question/solution element of a word problem on a tape diagram and solve

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