Simple Tips for Better Maths Results!
At the end of this video, you will learn the systematic approach to solve any quadratic inequality correctly.
I have observed that many students simply don't know what they are doing when solving quadratic inequality.
They think that solving quadratic inequality is similar to solving linear inequality!
This is the biggest mistake!
Solving quadratic inequality is a fundamental skill.
Watch the video, learn the 4 steps and apply them on solving any quadratic inequality to see results!
I am bringing forward my plan to return to teaching after 3 years of break.
This Friday, I'll conducting a 2 hours revision class on O Level Additional Maths.
It is an online live! lesson for Sec 4 O Level and IP. I also welcome Sec 3 to join us. As this is a revision class, the teaching pace will be faster.
Many of you might know me as the 10 Year Series Book Author for O Level A & E-Maths who have transformed hundreds and hundreds of students to achieve at least 4 grades jump in their exams.
I had been taking the O Level E-Maths and A-Maths exams with my students as a private candidate year after year. This got Straits Times curious and I was interviewed in "Math tutor sits exams to understand students better".
Do you know that roots of a quadratic equation can also mean the solutions, the x intercepts or simply put it the answers to the equation?
It is something we have learnt since lower secondary.
In 2019, GCE O Level Additional Maths Paper 2 Q10 tested candidates on their basic understanding of roots.
11 marks! Wow!
If you have been simply surface learning, you won't get past part (i) of the question.
See the video to see how I approach this question: https://www.youtube.com/watch?v=CPtbpO4At9w
Due to convid-19 situation, Ministry of Education (MOE) Singapore has announced the common last topic (CLT) will not be examined in 2020 GCE O Level Additional Maths examination.
I am selecting unique questions from 2017 GCE O-Level Additional Mathematics to discuss in my upcoming videos.
This first one is on linear law.
Basic concepts that you must know are:
In this video, I share with you a strategy I teach my student to make linear law easier to understand and reduce careless mistakes to a minimum. I called it "Capital Letter". I use capital letters to represent the complicated horizontal and vertical axes. Even my equation of line is in capital letters too.
Look at my video to understand my thinking process and apply it to yours when it's your turn to solve a linear law question.
This question is interesting as we do not have to draw the graph which is commonly asked in the past.
This question will cause your downfall if you are not absolutely clear on the concepts of linear law.
httpv://www.youtube.com/watch?v=wmYj8pu6-dc
Get my copy of Ten Year Series in all Popular bookstores!
Many students upon reading this question might not realise that it is testing our understanding of the concept on Highest Common Factor learnt in Secondary 1 Mathematics.
A floor 6.8m width and 11.05m length is to be paved with equal square tiles. Find the number of largest dimension square tiles that exactly fit the floor?
Step 1: I converted the metres into centimetres by multiplying with 100 (1m = 100cm) so that I can work with whole numbers instead of decimals.
6.8m = 680cm
11.05m = 1105cm
Step 2: I express each dimension in index notation by prime factorisation method.
Step 3: I find the HCF of these two numbers
HCF
This means the largest dimension of square tile will be 0.85m by 0.85m
Number of largest dimension square tiles used
Question of similar nature was asked in the recent year GCE O-Level examination in Paper 1 and many students did not know how to approach the question. I hope you find the explanation clear. It is always recommended to sketch a simple diagram to get your thinking started.