Lesson: Using proportions to convert customary units
1) At a bakery, muffins come in dozens and individual serving containers of orange juice come in packs of 8. If Tiera needs to have the same amount of muffins as orange juice containers, what is the least possible number of sets of each she needs to buy?
Direct Instruction: (20 minutes)
Ex. Convert 20 feet into inches
Model setting up the proportion. Be sure to emphasize that the same units must be across from each other. We can use our conversion chart as one ratio. When we are converting units of measurement we are showing a proportional relationship.
Have students add definition for unit ratio to their notes.
Unit ratio- the denominator is 1 unit
Ex. Convert 15 quarts into gallons.
Ex. Convert 3 1/2 pounds to ounces.
Ex. Convert 5 yards to inches.
Converting customary units work-out
|converting customary units work out Assessment||
|Customary Measurement Conversions Notes||