Length, Perimeter, and Area

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M3M2Students will measure length choosing appropriate units and tools.
a. Use the units kilometer (km) and mile (mi.) to discuss the measure of long distances.
b. Measure to the nearest 1/4 inch, 1/2 inch, and millimeter (mm) in addition to the previously learned inch, foot, yard, centimeter, and meter.
c. Estimate length and represent it using appropriate units.
d. Compare one unit to another within a single system of measurement.
M3M3Students will understand and measure the perimeter of simple geometric figures (squares and rectangles).
a. Understand the meaning of the linear unit in measuring perimeter.
b. Understand the concept of perimeter as being the boundary of a simple geometric figure.
c. Determine the perimeter of a simple geometric figure by measuring and summing the lengths of the sides.
M3M4Students will understand and measure the area of simple geometric figures (squares and rectangles).
a. Understand the meaning of the square unit in measuring area.
b. Model (by tiling) the area of a simple geometric figure using square units (square inch, square foot, etc.).
c. Determine the area of squares and rectangles by counting, adding, and multiplying with models.