First tell students to identify logical proofs as they read. After they finish reading, they are then ready to use these questions for rhetorical analysis.

We have already highlighted examples of statistical proofs in this short excerpt from the 2009 National Fuel Efficiency and Auto Emissions Policy as reported on President Obama's website:

Fuel economy standards will be raised to 35.5 miles per gallon by 2016, an increase of more than 8 miles per gallon per vehicle. As a result, we will save 1.8 billion barrels of oil over the lifetime of the vehicles sold in the next five years - more oil than we imported last year from Saudi Arabia, Venezuela, Libya, and Nigeria combined. This is the equivalent of taking 58 million cars off the road for an entire year.

Students' answers might look something like this:
Obama's intent is to use statistical projections that can convince his audience that these policies will have positive impacts on energy use and pollution. This type of logical appeal is appropriate because it grounds his argument in statistical evidence, which his audience would understand and be persuaded by. Obama seems to want them to believe that this policy will have a positive impact on increasing fuel efficiency and decreasing auto emissions. Examining the logical proofs helps me to understand the projected results of this policy and therefore how it could work.