Support by Vice Principal, Teachers, Tutors & Parents + 5-Day Challenge Update

Our LOB Parents Had Started Giving Out The Certificates!

Our recent 5-day Challenge was very well-received and many parents are rewarding their children for having completed this challenge!

I’m so proud of our LOB parents.

Here are some of our lovely parents presenting the certificates to their children! =)

Their kids are super happy!

How A Vice Principal Loves Our Problem Sums Solving Model

A Primary School Vice Principal, knowing that our LOB CPS methods work very well, contacted us for help.

The problem sums CPS training was given to their team of math teachers, HODs, teacher mentor and VP.

They love how we are making problem sums look so easy. They love it so much, that they have gotten our math strategic guidebooks.

What an experience for our LOB Team! <3

Even Teachers Are Using It

Our LOB CPS methods had been working very well.

So well that we started to see other educators adopting our problem sums methods to make problem sums easier for their students.

We are really very humbled that even school teachers are sharing our proven methods with their entire level of P5 and 6.

Our students are also sharing what they learnt from us with their classmates too.

I’m really proud of our LOB students!

Other Home Tutors Are Impressed By Our Methods Too… 

Even other external math tutors like this tutor told our parents that he was very impressed with all methods used in ‘Learning Out of the Box’ and requested the parents to continue to get our help in problem sums.

Hard To Understand Problem Sums? Need Help For Your Child Now? Here’s How To Contact Us… 

So if your child is finding problem sums hard to understand or you find it hard to teach your child to identify the problem sums types, you can contact us here.

Invitation by a Primary School Vice Principal

When a Primary School’s Vice Principal became interested in your Problem Sums Method, you know you are doing something probably right.

Well done to our LOB TEAM!

P.S. The problem sums CPS training was given to their team of math teachers, HODs, teacher mentor and VP. They have gotten our math strategic guidebooks. What an experience for our LOB Team!

5-Day Challenge!


🎒Last year, our 2-problem-sums-a-day challenge works very well.

These are how they have benefitted:

1. Problem sums become less confusing.💪

2. Parents finally understood how to teach their kids😊

3. Their children did problem sums by themselves. NO MORE nagging to get them to do their work! (Best reward for you, isn’t it?)🎁

So we are going to run a 5-day challenge just for you this week (also because many students have signed up for our lessons)

✅1. Every day I will post a problem sum video.
✅2. All you need to do is to watch ONCE with your child.
✅3. That’s it! And continue to do till Saturday.

This is one of the most effective LOB math strategies! And students have done well in math just by using this method.❤️

So if you want your child to do well for math, you and your child need to put in the effort too, right?

If you want this year to be the year your child improves in math, join us in this 5-day challenge!👏

* * *
🎒As your Math trainer, here are some guidelines for your 5-day challenge (for those of you who have said Yes to the challenge)

✅1. Watch the video of that day with your child.

✅2. Do not judge if it’s a P4,5,6 problem sum.

✅3. Your child will benefit more from listening to HOW I explain. In short, listen to my thought process.

✅4. Complete the 5-day challenge and help your child to build a daily habit.

✅5. Stay open. Even if you miss a day, make it up to two videos on the next day. As long as you stay committed, your child is going to learn from you.

You are your child’s role model!💕

What you see in exams or school worksheets are going to be different.

But what will stay the same is HOW your child solves the problem sum.

So let’s work together to help your child.

Focus on process.

Our LOB TEAM is so eager to watch your growth with us!👍

* * *

Today is day 1 of 5-day challenge.

✅Remember to watch WITH your kid.

✅Listen to the process. Discuss what are the steps.

✅This question appears from P4-6

Many children are still using listing which in my opinion is a total waste of time.

Help your child master this shortcut.😉

🎒For more hardworking children, they always covered the solution, rework the question to make sure they fully understood.

This is what helped them score better than their peers. They put in one more extra step.

So use this chance to teach your child this.

⚡️“Want better grade? Put in more effort!”

===> So here is your first PROBLEM SUM Video


* * *

[5-day challenge Day 2]

🎒Yes you have survived for our second day!

I must say I’m so proud of you and your child!👍👍👍👏👏

Do give your child 5 points for that. (Your child will get a surprise from you for that)

Record the points somewhere he can see.😉

✅Here’s your second video for today!

Once you have watched WITH your child, do post “done” below.


* * *

[🎒5-day challenge day 3]

Welcome to day 3!

While you are trying to understand how to solve problem sums, you have to first know that problem sums are divided into types.

There are a total of 11-12 basic types.

On day 1, you have seen same difference concept type.
On day 2, it’s grouping concept.
Today, you have 2 types combined into one problem sum.

I hope by watching my videos, your child can better understand how to solve problem sums and have less careless mistakes.😉

Post “seen” once you and your child have watched it.

Here goes

* * *

🎒Here is day 4’s video!

My favourite problem sum.

It’s something ALL P4-6s MUST MASTER!
Because you will see the same problem sum type/ concept across 3 years!



* * *

[🎒Final video for your 5-day challenge + ⭐️how to claim your certificate❤️]

3 simple steps for you to follow now:
✅1. Watch this WITH Your child

✅✅2. Post “We won” in the comment box below

✅✅✅3. Email to

To claim your child’s certificate (limited to 30 copies)

With email title
“5 days challenge cert”
Add your child’s primary level

We will only reply emails with full details and proper email title.

Now go finish your 5-day challenge.

The finishing line is within reach!


Want more trusted problem sums guidebook for your children?

Check out our resource guidebooks based on primary levels


P5 Problem Sums Exam Strategies For My Girls

My P5 Problem Sums Proven Exam Strategies For My Girls

To my girls,

As your father, I would never know if I’m still around tomorrow.

Like my own father who had passed on when I was very young, I always wanted to have my knowledge to be available in books (and now websites) so that they can serve you well whenever you need them.

What you’re about to read is compiled based on the thousands of students and parents our team had coached and helped in our Problem Sums Mastery programme.

To start off, I want to share with you a very important skill. This is the goal for you. Not just in school. But also in your life.

You need to study smarter. That’s by learning and mastering Concepts, Processes and Skills. (C.P.S)

Read on for your more detailed study smart plan. 🙂

Your Master Study Plan for January and February (just before your CA1)

Normally in the beginning of January, this is the your more relaxed period.

It’s the period when you and many of your friends are getting used to the new stage of life.

Take 1-2 weeks to get use to school, your new class and your fellow classmates. After which, you must start to revise all your P4’s math content.

Why Do This When You’re Already Now in P5?

Because you will soon be tested in how well you can integrate and apply P4 content in this upcoming P5 CA1. (Your P4 math knowledge is your P5’s math foundation.)

Here’s what you should do at this stage (in steps).

#1: Retrieve your P4 math CA1, SA1, CA2 and SA2 papers.

#2: Go through all the short-answer questions (SAQ) and problem sums diligently.

#3: For all those right questions, skim through them while identifying the concept.

For example, “What is the remainder when 1928 is divided by 6?”

Yes, it’s important to know how to solve it.

However, for the fact you have gotten it right before, you know how to find the answer.

What’s even more important now is to ask yourself

  • How will you solve similar questions (if you ever see them again)?
  • What is the key step to start off with for long division?
  • How do you know if your remainder is the correct one?

#4: Get a paper notebook. Record all these sample questions together with the key concepts and methodology.

You just need one sample question for every concept.

This Is The Power Of Learning By Concepts.

You just need to read and learn one to be able to answer all.

This paper notebook is going to be your personal P4 summary book.

Once it’s compiled with all the sample questions of all the exams, you just need this ONE book just before your P5 CA1 to revise your P4 math content.

This is going to save you from many late nights.

Here’s A Story About Securing A-star. (Plus The Effective Study Tips You Must Remember)

A P6 girl once asked me how she could get and maintain her A-star grade. We worked out a plan and she diligently followed every step.

(Yes, she got her A-star for Prelim and PSLE.)

  • Get a paper note/ exercise book.
  • Record those questions that they couldn’t get right.
  • Write the solutions. Make key notes on the key concepts/ steps.
  • Do for all the questions.

From our experience of having coached thousands of students, the amount of effort your child put in is proportional to the marks she will get.

High achievers normally use different smart learning/ study strategies to achieve phenomenal results.

Eventually their effort paid off. =)

#5: For all those wrong P4 exam questions, I strongly urge you to cover your corrections, redo them with a fresh perspective.

The common mistake of having done corrections is this.

It’s to assume you have fully understood it and can solve the same question if it ever appears again.

Anyway, it won’t take long if you think you have really understood them. Don’t skip any of this.

Because how well you do for your P5 depends on your P4 math foundation.

#6: Now, prepare another paper notebook. You’re going to summarize what’s being taught in P5.

As the term has just started and the teaching pace is generally slower at the beginning of the year, you should have time to do a quick and concise summary for the topic covered.

#7: Riding on #6, pick up the other schools’ past years exam papers that you may have. Don’t attempt to complete the exam paper at one go. (This is what most others will do.)

What you should do differently is to identify the questions that are testing you on the current topic you are taught.

Next, write the title of the topic next to the question number and highlight the key components of the questions. They could be key numbers or words. (This also tells you that not every word in a question is important.)

After you have solve the question, write down the key concepts/ steps in any space next to the questions.

This part is crucial because first, it refrains you from jumping to the next question without recapping what you have done and second, it trains you to see the purpose of setting math questions as testing you concepts. “So do you know what concept is being tested for this or that?”

Use different colored pens. But stick to your system of solving a problem sum. (Yes, even problem solving process comes with a system and you should follow this strictly. It gives you the results you want. That is right answer with correct and fast solving method.)

Proven System = Predictable Results

Next for color coding, green for key words and numbers, blue for topic title and purple for concept.

Rinse and repeat whenever a new topic is taught. Do not wait.

#8: You will have common/ class test. Do not take any class quiz or test lightly.

Of course, I want you to enjoy it.

What daddy really mean is treat every quiz/ test as an opportunity to help yourself better understand what you know/ how much you remember.

What about making mistakes?

It’s totally ok. Learn from it and move on. (This is the same thing I shared with all our students in our Math Programme.)

#9: So much has been covered but I haven’t covered the most important part.

Do you know the Difference between Short Topical Questions and Problem Sums (with Various Concepts)?

Short topical questions are direct questions with very straight forward answers. These are some examples.

Express 30 kg 36 g in grams.

Round off 785 435 to the nearest thousand.

Find the value of 6 x 8 + 60 – 7.

Problem sums are normally bonded by a concept or two. To tackle them, do not treat them as topics. Identify the key words to spot the primary concept/ problem sum type.

Then solve the problem sums using the main method.

For example…

“Lincoln has $165 worth of $5 notes and $2 notes. He has five more $5 notes than $2 notes. How many notes does Lincoln has?”

If you have no idea how to solve, I have prepared the below video for you.

Are you able to recognise that the key words are “five more” and the concept is “Grouping”?

Using the next problem sum as an example, are you able to recognise that it’s “Same difference”?

“Thila was 38 years old and her son was 5 years old 3 years ago. In how many years time from now will Thila be 4 times as old as her son?”

To find out how to solve, watch the video below.

As shown in my Problem Sums Guide for Parents, there are 11 basic problem sums types you must know by CA1. (Yah so many. Not much time left. That’s why you must start now.)

1. Remainder concept
2. Equal concept
3. One unchanged

4. Same difference
5. Total unchanged
6. Simultaneous

7. Guess and check
8. External unequal change
9. Working backwards

10. Number of units x value
11. Gap and difference

Make sure you can execute these 3 steps for every concept

  1.  Identify the key words
  2. Know the concept
  3. Use the primary fastest method

Watch this video on my 5-step process to solve any problem sum.

Here’s More You-Must-Always-Remember Tips

(as you enjoy new your school year)

Tip 1: It will be your first time to attempt a full PSLE paper in P5 CA1. You will see paper 1 (booklet A and B) and paper 2.

Give yourself some space and room to explore.

Though the format of the papers are different, the time you allocated to every question and to secure every single mark is the same.

A good way to gauge your own speed is to use this

1 mark = 1 minute

For example, for a 2-mark question, you can use 2 minutes.

What happens if you’re still stuck when the time is up?

Two choices. Move on to the next question.

Or spend at most another minute and after which, you MUST Move On.

Tip 2: Watch this video I had made for our students. Please avoid this mistake.

Do not compartmentalise what you have learnt.

Everything else is inter-related.

Tip 3: Take a note of the sample answers below and tell me which ones do you like the most.

Answer Sample A

Answer Sample B

Answer Sample C

Answer Sample D

Answer Sample E

Probably you have seen the distinct differences in how these right and wrong answers are presented.

Which one do you prefer to mark if you’re a teacher? (and you know you have over 200 exam papers to mark and submit in 5 days’ time)

So a few things here.

  1. Make your handwriting neat. (Teachers have hundreds of scripts to mark. So please make it easy for them to read and to award your marks.)
  2. Organised steps. (You realise from the answer samples that clear thinking process brings about clear steps. So if your steps look illegible/ disorganised/ confusing, it probably shows you are unclear of how to start or solve. So stay calm and clear the clutters off your head. Focus and your solutions will be neater.)

You probably had realised by now that solutions of students, who score high marks, look tidy and are easy to mark. (Their answers almost look like the model answers that many others can learn/ study from.)

I want you to learn from them. Observe what they’re doing. (Success leaves traces.)

Here’s a final study tip for you.

Make sure you show clear, concise steps even when doing home revision.

Treat all revision (be it in school or home) seriously.

I really believe you can do it. Most importantly, I want you to believe in yourself that you can do it too and you’re going to do your best.

Love you,


(John Yeo, founder and chief math trainer for LOB Math Programmes)