Calculating % Grade of a Hill

[Mr. Bloom]

Thanks for the idea! Now, how often do I have to use this GPS in order to make it tax deductible?

That's cool! As for 'tax deductible', forget that...that's just a 'discount'. Get the principal to reimburse the entire thing instead!

I'm convinced that kids respond well to practical learning when enhanced with technology. It's cool that you cared enough to speak to them in 'their language'.