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In this lesson you will learn how to measure by using smaller, equally sized objects.

In this lesson you will learn how to measure by using a ruler.

In this lesson, you will learn how to compare the results of measuring an object twice by using inches and centimeters.

In this lesson, you will learn what it means to estimate the length of an object by comparing it to other objects.

In this lesson you will learn how to find the difference between two numbers by using addition.

In this lesson, you will solve length word problems by adding and subtracting on a number line.

In this lesson you will learn how to measure objects to the nearest half and quarter inch by using a ruler.