Commonly asked in school and 'O' Level Examinations, many students also commit to commonly made mistakes. Watch the video (5 minutes) and see how you can add another 3 marks easily.

Leave me your comment. I would love to hear from you.

A-Math: How to Sketch Modulus Graph
This morning, I received an email from a student on asking how to draw a modulus graph with and without boundary condition.
What is boundary co...

Hi, I'm Ai Ling Ong. I enjoy coaching students who have challenges with understanding and scoring in 'O' Level A-Maths and E-Maths.
I develop Math strategies, sometimes ridiculous ideas to help students in understanding abstract concepts the fast and memorable way.
I write this blog to share with you the stuff I teach in my class, the common mistakes my students made, the 'way' to think, analyze...
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4 Responses to [Video] A-Math: Quadratic Equation & Discriminant (Plus Common Mistakes & Counter Measures)

Very good video for students to learn Quadratic Equations, as well as a teaching tool for teachers and tutors. Keep sharing! I will share this video blogpost with my readers.

Very good video for students to learn Quadratic Equations, as well as a teaching tool for teachers and tutors. Keep sharing! I will share this video blogpost with my readers.

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Thanks great mathematician for sharing knowledge. I am looking forward to learning more from you.

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Many of us forget to change the inequality sign when we arrive at this stage

-12k < -36

k < 3

Glad you have shown a better way to avoid the above error.

Thanks

Reply

Much appreciated post. I find that even when I point out those mistakes, there's still a large percentage of students that make them.

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