What is the Best Way to Prepare Your Child for
the National Science Olympiad in Mathematics

This inquiry often appears by many parents I’ve met,
even from fellow teachers. The Mathematics OSN is known as a highly selective competition, with problems that demand critical mathematical abilities.
So, what is actually the best way to prepare children for
this competition?

I personally had an experience when my friend’s younger brother tried to
join the Mathematics OSN at the district level. At first, he
studied the conventional way: solving practice problems,
reading books, and discussing with friends. But the results were not very satisfying.
After trying intensive tutoring through a private teacher, the results were completely different.

Is OSN Preparation the Same as Learning Math at School?

One thing that must be understood: preparing for OSN is not the same as learning math daily
at school.

According to research from Stanford University, competition-based learning demands higher-order thinking skills that differ from regular classroom learning (Resnick, 1987).
OSN emphasizes analysis, creativity, and the ability to connect concepts
across topics.

That’s why students who rely only on school lessons often feel overwhelmed.
They need different strategies—and this is where guidance from private tutors such as those at NgajarPrivat.com becomes extremely
helpful. OSN tutors are used to giving more challenging
exercises, not just ordinary school exam problems.

Why Are Private Tutors More Effective for Olympiad Preparation?

I once talked with a private tutor from KoncoSinau.id who has been mentoring Olympiad students
for more than ten years. He said that many kids are
already smart, but without the right guidance, they are like “lost” in the jungle of Olympiad problems.

This aligns with research from the Educational Testing Service (ETS), which showed that personalized learning improves conceptual understanding by up to 30% compared to large classrooms (Bloom, 1984).
Private tutors can quickly identify student weaknesses—whether in number theory, combinatorics, or geometry—and address them through a personalized
approach.

I still remember when that student failed on a solid geometry
problem. His private tutor didn’t just teach formulas for volume but also connected it with 3D visualization. With that approach, the child understood much faster.

What’s the Difference Between Online and Offline OSN
Private Lessons?

Another classic question is: which is better, online or offline OSN
tutoring?

From my experience, both have advantages. Offline (face-to-face at home) offers comfort and
full focus. Meanwhile, online provides access to the best tutors
from different cities.

Research from MIT shows that blended learning (a combination of online and offline) produces better learning
outcomes compared to a single method (Means et al.,
2013). So the issue isn’t which is better, but
rather how comfortable the child feels and whether they can stay consistent.

At LapakGuruPrivat.com, for example, there are options for tutors to come to the house for children who need direct guidance, and Zoom/Google Meet sessions for those in other cities.
From my family’s experience, this flexibility is very helpful,
especially when OSN preparation time is tight.

How Important Is Practice in OSN Preparation?

Doing practice questions is indeed important, but it’s not just about the number of problems.
According to research by Ericsson et al. (1993), what matters more is deliberate practice—practice
that is structured and comes with direct feedback.

I personally witnessed how my friend’s younger brother used to complete 50 OSN problems in a week, but his
progress was slow. Once he joined an intensive program at NgajarPrivat.com, the number of problems became fewer, but each one was discussed deeply with different
strategies. As a result, he quickly learned to recognize patterns.

Private tutors usually have OSN problem banks from previous years,
and even international Olympiads. This allows students to become familiar with
various levels of difficulty.

Can OSN Tutoring Shape a Child’s Character?

Many parents think private tutoring is only for academic improvement.
But from my experience, OSN preparation also helps build
character.

According to a study from the University of Indonesia,
Olympiad participants have higher levels of grit and resilience compared to
regular students (Putri, 2019). This is because they are used
to facing tough problems and not giving up until they find the answer.

I personally saw the student I mentored become more patient, more diligent,
and more confident after attending OSN private lessons.
So the benefit is not only winning competitions, but also developing
traits that carry into everyday life.

Which OSN Math Tutoring Platforms Can Be Trusted?

Nowadays, there are many tutoring platforms, but from
my personal experience, three are worth recommending:

– **NgajarPrivat.com** → Best for intensive guidance,
especially for students who prefer face-to-face interaction.
– **KoncoSinau.id** → A great option for students who are more comfortable with
online learning, supported by flexible and experienced
tutors.
– **LapakGuruPrivat.com** → Offers various OSN subjects, not
only mathematics. Perfect for families with children who have
different academic interests.

All these platforms have proven successful in helping
many students reach the national stage. Interestingly, many
of the tutors are OSN alumni or top university students
from places like UI and ITB.

Conclusion: Should Students Take OSN Private Lessons?

If asked whether it’s mandatory, the answer is no. Many outstanding students succeed through self-study.

But in terms of time efficiency, the right strategies, and higher chances of success, OSN private tutoring is clearly a wise choice.

With guidance from experienced tutors on platforms like NgajarPrivat.com, KoncoSinau.id, or LapakGuruPrivat.com, students are not only ready to tackle
Olympiad problems but also equipped with the mental
strength to face future academic challenges.

In my view, this investment is absolutely worth it. Because in the
end, OSN is not only about winning medals, but also about
shaping a young generation ready to compete at the global level.