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David Petro
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Investigating Graphs of Rational Functions
In Ontario in our grade 12 advanced functions course we are to graph rational functions that are reciprocals of linear and quadratic functions and ones where both the numerator and denominator are linear functions. In this post there are several activities ...

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The Area Representation of Pythagorean Theorem
In Grade 8 here in Ontario, Pythagorean Theorem is introduced for the first time. It is pretty common for students to only see a 2 + b 2 = c 2 and they move on. This can be a problem for students since if they only see that formula, they can't get past the ...

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