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Erlina Ronda
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Erlina Ronda

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Just because you cannot use the term derivative does not mean you can't teach it yet. This post suggests a way of introducing the derived function to Grade 10.
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Erlina Ronda

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One-on-one Private Academic Tutoring for Secondary School Students I'm an e-tutor on MATH & FRENCH. Other sciences & European languages available by coleagues. For detail on 1/1 tutoring, please call me at +33 6 1943 4965 or Skype Jean-Yves Rollin ØØØ E.B.S Paris 1979
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Erlina Ronda

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This post describes different types of problem solving tasks we normally use in teaching mathematics.
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Erlina Ronda

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Before I answer the question in the title, we need to do some revisions: This is what you do when you solve a quadratic equation like x^2-3x-10=0 : Solution: => (x-5)(x+2)=0. => If x-5 = 0, then x = 5; if x+2 = 0, then x =-2. The solution is x=5 or x=-2. If you graph the equation, ...
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Erlina Ronda

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Problem. Two lines intersect the graph y=x^2 . The secant line intersects the graph at point A and B and the tangent line which is parallel to the secant, touches the graph at point E. You can read the coordinates of A and B from the graph but not E. What are the coordinates of E? What are the ...
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Erlina Ronda

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The discriminant of a quadratic equation, ax2 + bx + c = 0 is D = b2 – 4ac. If D>0, the quadratic equation has two distinct roots; if D<0, then the equation has no real roots; and, if D=0, the we have two equal roots. Let's apply it in the following problem.
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Have her in circles
85 people
Kristi Grande's profile photo
Yan Kow Cheong's profile photo
Christopher Smy's profile photo
Math Recount's profile photo
Maria Droujkova's profile photo
May Chavez's profile photo
Steve Phelps's profile photo
Pierre-Yves Gaillard's profile photo
Jacquie Gutierrez's profile photo
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