Berezovsky began his working life as a math professor and then a systems analyst, according to CNN's Jill Dougherty, who interviewed him many times.

CNN: Russian tycoon Berezovsky dies in exile, relative says

Berezovsky began his working life as a math professor and then became a systems analyst who switched to more lucrative jobs in post-Soviet Russia, said CNN's Jill Dougherty, who interviewed him many times.

CNN: Putin foe, exiled Russian oligarch found dead in UK home

Today Mattecentrum receives financial backing from more than ten large corporations and has created a network of programs online and in real life to make math vibrant, exciting and respected as a key skill for success.

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She hopes the extra time will help bring students up to their grade level in reading, vocabulary, math, science and life skills.

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They set him on path of what he thought would be a life in academics focused on economics, math and statistics.

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The test is given every three years, and it measures the ability of 15-year-olds to apply math and science to real-life situations.

NPR: Child Actors Spirited Out of Afghanistan

Even for those who like math, those figures can seem oddly devoid of joy and life energy.

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We do funerals nicely here, elegies and memorials, "celebrations of life, " we call them, whether it's a ninety year old math professor in a nursing home or an unlucky student drunkenly falling into a snow bank or tumbling down an elevator shaft.

NPR: Excerpt: 'Gone Tomorrow'

Math was, for young Tengo, an effective means of retreat from his life with his father.

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