Sec 3 A Math: Quadratic Discriminant & Completing the Square (Find Max/Min Values)

In this Sec 3 Additional Mathematics lesson, we focus on one of the most important skills in the Quadratic Equations chapter – Completing the Square to find the maximum and minimum values of a quadratic expression.

This video covers:
✔ Understanding how completing the square helps us identify lowest and highest values
✔ Key techniques and common mistakes students make
✔ How the discriminant and the graph shape relate to max/min values
✔ Step-by-step worked examples commonly seen in school exams

This is part of our Sec 3 A Math Tuition series designed to strengthen foundational understanding and exam confidence.

ABOUT MATH ACADEMY https://mathacademy.sg
We are an exclusive maths tuition centre that specializes only in Mathematics, from secondary to JC. All our tutors graduated with a degree in Mathematics from NUS (National University of Singapore), with other certifications ranging from MOE PGDE to First Class Honours.

We are extremely familiar with the concepts and techniques required to do well in O and A levels, and we prepare our JC H2 math tuition and A Maths tuition classes towards achieving a top grade.

ABOUT Sec 3 and 4 MATH TUITION CLASSES https://mathacademy.sg/courses/a-math...
Founder of Math Academy tuition centre, Ms Jolyn Ang is a former MOE school teacher with 20 years of teaching experience. She has graduated from NUS with a degree in Mathematics, and also holds a Postgraduate Diploma in Education, specialising in teaching Math at Secondary School level.

With her experience in setting examinations whilst at MOE, Ms Jolyn has a broad and comprehensive understanding of the demands and trends in a Math Examination paper. In addition, the yearly O Levels Marker’s report has been analysed, and this provides an even clearer understanding of what examiners are looking for when awarding marks at the O Levels.

Ms Ang’s dedication in improving the results of the students goes beyond just the preparation of the materials. She engages students in inquiry-based-learning, asking guiding questions to trigger and kickstart the analytical process of solving Math. The weekly worksheets are also marked, and this allows for each and every students’ ability to be assessed, identifying issues and correcting them on a weekly basis. A small class of an average of just 6 students, Ms Jolyn is able to provide close individual attention and help students improve.

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