Standards with the same topic and subject but for other grades
Recognize area as an attribute of plane figures and understand concepts of area measurement.
Geometric measurement: understand concepts of angle and measure angles.
Measure angles in whole-number degrees using a protractor. Sketch angles of specified measure.
Recognize angle measure as additive. When an angle is decomposed into non-overlapping parts, the angle measure of the whole is the sum of the angle measures of the parts. Solve addition and subtraction problems to find unknown angles on a diagram in real world and mathematical problems, e.g., by using an equation with a symbol for the unknown angle measure.
Geometric measurement: understand concepts of area and relate area to multiplication and to addition.
Relate area to the operations of multiplication and addition.
Measure areas by counting unit squares (square cm, square m, square in, square ft, and improvised units).
An angle is measured with reference to a circle with its center at the common endpoint of the rays, by considering the fraction of the circular arc between the points where the two rays intersect the circle. An angle that turns through 1/360 of a circle is called a “one-degree angle,” and can be used to measure angles.
An angle that turns through 𝘯 one-degree angles is said to have an angle measure of 𝘯 degrees.
Apply the area and perimeter formulas for rectangles in real world and mathematical problems.