Give students time to copy down this definition on their second idea wheel sheet. Listen carefully to his explanation of how you measure perimeter, what area is and how you measure it. I will pause the video again so you will have time to write down these notes on your idea wheel. Resume the tape . Students should have written that perimeter is the line outside the shape, and you measure it in linear units such as meters or yards.
Area covers the surface.
You measure it in square units. Ask students to think about rectangles. Draw one on the board, four units by two units. Have students draw one on the their graph paper with sides 4 units by 2 units. Ask them to label the perimeter and the area.