Month: April 2013

The 0.0001 Time Rate Approach

High School Calculus

by Armand Gelig Macapagong

I encountered Differential Calculus when I was in my 2nd-year High School. As a part of the Math Magi, a Mathematics club in our school, we were taught advance topics apart from our daily Math subjects in class. One of these was an introduction to Differential Calculus. I found Differential Calculus as one of the interesting subjects and my favorite topics were L’Hospital’s rule and Maxima-Minima.

When I went to college, I encountered Differential Calculus again. This time, it becomes a lot easier since I already had a taste of this subject. But what caught my attention was that, a lot of students in our class failed in almost all quizzes. This brought me to thinking, that if I can introduce an easier concept to my classmates, or if I can develop a less complex approach which they can easily grasp, maybe I can help them. So I worked hard in finding an easier approach. I developed this technique two years after that Differential Calculus subject. So, I never really had the chance to help my classmates back then. » Read more

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Math Teachers at Play 61

Blog Carnival

Researching 61 as a number tells us it’s not just prime, but is a twin prime, a61squares cuban prime, the 9th Mersenne prime exponent, and a Pillai prime. That’s primo prime pedigree. It’s a Keith number and thrice Fortunate. (Fortunate numbers are pretty interesting and the subject of an open conjecture.) It’s a centered square number (1+4+8+12+16+20), a centered hexagonal number (1+6+12+18+24) and a centered decagonal number (1+10+20+30); mostly because it’s neighbor 60 is so nice. (Did you see the 60th Math Teachers at Play?) Is there a reason that ∑4n, ∑6n and ∑10n overlap at 60? But the fact that really caught my eye was that 61 is an Euler Zig Zag number. How cool can a number get?

Continue reading at Math Hombre.

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The Search for Symmetric Words

High School Mathematics, Math Lite, Math Palette

The word MATH has a vertical line of symmetry. The parts of the letters on the left of the vertical line are reflected on the right. On the other hand, the word DECK has a horizontal line of symmetry.  The parts of the letters below horizontal line are reflected above.

symmetric-words

The word OHIO is both horizontally and vertically symmetric.

Challenge: Find as many words as you can that are horizontally symmetric, vertically symmetric, and both. What are the longest symmetric words of each kind?

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