Dan Christensen

Member for 5 years, 11 months
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dcproof.com
Canada

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20 undergraduate-education × 10	7 middle-school × 2	3 students-mistakes × 2	1 notation
18 proofs × 4	6 secondary-education × 6	3 primary-education × 2	1 infinity
10 algebra × 6	6 mathematical-pedagogy × 3	3 teacher-development	0 abstract-algebra
10 induction × 2	5 definitions × 4	2 concept-motivation × 2	0 powers
9 geometry × 5	4 logic × 2	2 real-numbers	0 trigonometry
8 negative-numbers × 2	4 teaching × 2	1 precalculus × 2	-1 functions × 3
8 arithmetic-operations × 2	3 calculus × 3	1 teacher-preparation	-1 fractions
7 exponent × 2	3 examples × 3	1 division	-2 self-learning

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