My students are always asking me why this is true (they just won't accept the pattern of 10^2=100, 10^1=10 and 10^0=1). Beans also shows us why a^-k = 1/a^k. It won't take long to show students (in college, not 7th grade!) this. Maybe, on second thought, 7th graders would get it.
By the way, I found the above mentioned exponent post on Me Or My Maths because of How Many Frenchmen Can’t Be Wrong?: Vlorbik on Math Ed.
≤≥ ≤≥ ≤≥ ≤≥ ≤≥ ≤≥
Technorati tags: exponent adding+zero negative+exponents
_/\_/\_
No comments:
Post a Comment
Thank you for visiting and for your comments!