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  7. How to Best Prepare Students to Face the Mathematics National Science Olympiad?

    This inquiry often appears by many parents I’ve met, even from
    fellow teachers. The Mathematics OSN is known as a
    extremely rigorous competition, with problems that demand advanced thinking skills.

    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 quantity 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.

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