88thth grade math grade math88thth grade math grade mathWeek of 3/28/11Week of 3/28/11

Day 2Day 2

Review of homework assignment

• Unit conversions: What techniques do we want to use?

Review of homework assignment

• Unit conversions: What techniques do we want to use? Ratios and cross cancellation

Review of homework assignment

• Common errors:• No labels• Improper ratios: numerator and

denominator are not equivalent• Not cross canceling the labels• Plugging in numbers into the

calculator.

Upcoming quiz on unit conversions

• Period 1: Thursday, March 31• Period 3: Friday, April 1• Period 6: Friday, April 1

Homework check: Writing Problems• Exchange your papers with the

student sitting next to you.• Review each question to make

sure that the requirements were met.

Class work: Unit Conversions

Write 16 problems using unit conversions.• 3 one step problems from small to big units• 3 one step problems from big to small units• 3 two step problems from small to big units• 3 two step problems from big to small units• 1 one step problem from metric to customary units• 1 two step problem from metric to customary units• 1 one step problem from customary to metric units• 1 two step problem from customary to metric units

Upcoming quiz on unit conversions

• Period 1: Thursday, March 31• Period 3: Friday, April 1• Period 6: Friday, April 1