The focus of this unit in on finding the perimeter and area of a given figure. Perimeter is measured in units of feet, meters, centimeters, inches, and etcetera. To find an unknown side, take the whole perimeter and subtract the known sides, until you are left with the missing side (X). Area is measured in square units or un^2. Students will use formulas to find A & P of regular and irregular figures. Figures closest to the shape of a square will have the largest area, while figures that are long and skinny have the greatest perimeter.
Distributive Property: "You take it, You break it, And you put a plus sign in between!" This formula allows the students to find the area of an irregular figure.
Perimeter
Side + Side + Side + Side = Perimeter (AND/OR)
Side X Number of Sides = Perimeter (*If the sides are all the same length.)
Area
Factor X Factor = Product
Rows X Columns = Product
Length X Width = Area
Distributive Property: "You take it, You break it, And you put a plus sign in between!" This formula allows the students to find the area of an irregular figure.
Perimeter
Side + Side + Side + Side = Perimeter (AND/OR)
Side X Number of Sides = Perimeter (*If the sides are all the same length.)
Area
Factor X Factor = Product
Rows X Columns = Product
Length X Width = Area