**MUST HAVE**a numerical value and a unit attached to it. Again if either is missing, the answer will be marked wrong. The 5 step method is: 1. Identify the formula you will use or the conversion factor needed. Write it down on the paper.

**EXAMPLE:**the conversion factor that allows you to go from kilometers to miles is: 1 mi/1.6km OR the reciprocal 1.6km/1mi 2. Identify your known and unknown values. Write them on the paper.

**EXAMPLE:**Let's say you are in Paris and want to see the Eiffel Tower which is 15.6 km from your hotel. You want to know how many miles that is.

**Your known is 15.6 Km and your unknown is X miles.**3. Set up your equation or formula. Write it down on the paper.

**EXAMPLE:**15.6Km/1 x 1mi/1.6Km = ? Note I HAD to choose the conversion factor that has the unit I want to cancel out in the denominator so it cancels. This sets up the rest of the problem so Km cancels and so do the 1's leaving me with 15.6/ 1.6= ? miles. (remember you still have the uncancelled uit mi there to use) 4. Solve the equation and write it down.

**EXAMPLE:**15.6/1.6= 9.75miles 5. Circle the correct answer with the unit. Students were given problem 5 A & B from their reading to try at home.

## No comments:

## Post a Comment