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Abdallah Abusharekh

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Questions (8)

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30	How to explain that a negative number multiplied by a negative number is a positive number, and that $-(-x)=x$?
17	How to explain the difference between the fraction a / b and the ratio a : b?
14	Is $a^0 = 1$ for a nonzero, real number $a$, a theorem or an axiom?
8	Is multiplication by zero clear for and understood by K-3 students?
8	Is there any other procedure to find the square root?

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Answers (5)

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4	How to explain that a negative number multiplied by a negative number is a positive number, and that $-(-x)=x$?
4	Appreciating the Distributive Law
1	Unable to solve word problems, fluent in arithmetic
1	How to teach someone that $-3>-4$?
-2	How to convince the students of grade 8 that $\sin 90^\circ =1$? ( calculator not allowed )

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8 algebra × 5	1 word-problems
5 negative-numbers × 5	1 mathematical-pedagogy
4 undergraduate-education × 4	0 primary-education × 2
4 secondary-education × 2	0 curriculum
1 concept-motivation × 2	0 arithmetic-operations

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