Understand measurable attributes of real-world and mathematical objects using various tools.
Geometry & Measurement
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Find perimeter of polygon, given whole number lengths of the sides, in real-world and mathematical situations.
Develop and use formulas to determine the area of rectangles. Justify why length and width are multiplied to find the area of a rectangle by breaking the rectangle into one unit by one unit squares and viewing these as grouped into rows and columns.
Choose an appropriate measurement instrument and measure the length of objects to the nearest whole centimeter or meter.
Choose an appropriate measurement instrument and measure the length of objects to the nearest whole yard, whole foot, or half inch.
Using common benchmarks, estimate the lengths (customary and metric) of a variety of objects.