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Mathematics Challenge International Contest Preparation

We are working on strategies to solve challenging logic word-problems leading up to the Noetic Learning Math Contest (NLMC). The NLMC  is a semiannual problem solving contest for elementary and middle school students including tens of thousands of children worldwide.

Snake Game -- Binary Operations +-x/^ and square roots

This game is challenging at every level from K-5th grade. The first square must be given and every other square after that is a binary operation (+-x/) (plus, minus, times, and division) and ^ (exponent and square root. Also, the last square is given.

One Grain of Rice (K and 1st Grade) Doubling with the first 30 powers of 2 -- Exponential Growth

Many years ago, there lived a selfish raja in India. He ruled that all the people should give him almost all of their rice for safekeeping so that in a time of need there would be rice to eat.

The Story of Montarek (2-5th Grade) — Doubling, Tripling, Quadrupeling and Adding Five (Exponential Growth vs. Linear)

After a week focusing on exponential growth in the population of the world and most of its countries, I shared an ancient legend with the chlldren about The Story of Montarek, which better emphasizes the power of exponential growth. In the Montarek saga, a peasant girl saves the King’s daughter and is offered a reward.

World Population from 10,000BC to 2100AD (number notation, years to next billion and doubling)

Tracking the world population has always been a fascination for me. I particularly enjoyed the billion benchmarks reached for 4, 5, 6, and 7 billion during years 1974, 1987, 1999, and 2011, respectively.