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Mathematics. (1 + x ) n = 1 + nx + x 2 +...+ x k +...+ x n . (1 + x ) n = 1 + nx + x 2 +...+ x k +...+ x n . (1 + x ) n = 1 + nx + x 2 +...+ x k +...+ x n . ( a + b ) n = a n + na n-1 b + a n-2 b 2 +...+ a n-k b k +...+ b n ,. Dyscalculia.
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Mathematics • (1 + x)n = 1 + nx + x2 +...+ xk +...+ xn. (1 + x)n = 1 + nx + x2 +...+ xk +...+ xn. (1 + x)n = 1 + nx + x2 +...+ xk +...+ xn. • (a + b)n = an + nan-1b + an-2b2 +...+ an-kbk +...+ bn,
Dyscalculia Dyslexia of mathematics
Who has it? • 5%-8% of 6-14 year olds have it • Similar to percent who have dyslexia • Children with siblings who have it are 5-10 more likely to also have it • 17% are also dyslexic • 25% have attention hyperactivity disorder
How is it tested for? • There are no definitive tests for dyscalculia • Inconsistency in a child’s intellectual ability and their understanding of mathematics • Grasp of mathematics is consistent with a grade level two beneath the students
Why can’t some people do math? Why can’t some people read? • Bad teachers • Only really intelligent people can do it • Anxiety • Phobia
“We have an attitude that being bad at math is socially acceptable. People would never dream of telling others they are unable to read, will proclaim publicly they flunked math.”
Different parts of the brain involved in different mathematical functions • Exact mathematics (language) left inferior frontal region • Approximate mathematics (visuo spatial cognition) Number sense bilateral parietal lobes
Abstract vs. Exact • 1+1=2 • 7>3
The Brain THE BRAIN
Posterior parietal region of the brain that is active during arithmetic Is also responsible for goal directed hand movements
How a child learns math • Birth • Counting • Adding/Subtracting • Multiplication/Division