- LearnZillion: Square units
- LearnZillion: Area of a rectangle
- Khan Academy: Transition from counting square units to the formula
Discover that the exact same 20 square crackers (Cheez-its, Chex) can yield many different perimeters while the area always remains 20. Draw out your discovery.
Finding Area Around your Home
Grab a ruler or tape measure and find square and rectangular objects around your home. Measure the length and width – you pick the measurement (inches, centimeters, feet)… then multiply. 5th graders your measurements can include fractions.
Area = length x width or A = lw.