Oswaal One For All Olympiad Prep-Guide — Class 4 Science (Review)

A Class 4 Science Olympiad — most commonly the SOF National Science Olympiad (NSO) — is usually the first exam where a child needs more than the school textbook. Oswaal's One For All Olympiad Prep-Guide, Class 4 Science is built specifically to fill that gap with real past-paper questions rather than invented practice sets.

View the Oswaal Class 4 Science Olympiad Prep-Guide on Amazon

In short: if your Class 4 child is sitting NSO or a similar science Olympiad, this Prep-Guide is a sensible single book — it's organised chapter by chapter around real previous years' questions, with graded Level 1/2/Achievers practice and free Oswaal.AI concept videos for anything that doesn't click from the notes.

What it is

• Publisher: Oswaal Books, part of the "One For All Olympiad" series.
• Built around chapter-wise previous years' solved papers — actual questions that have appeared in past Olympiad exams, organised by school-syllabus chapter rather than dumped together.
• Edition "For 2026 Exam" — check you're buying the current year's printing.
• Content is mapped to CBSE, CISCE (ICSE) and other state boards' Class 4 Science syllabus, so it also works as ordinary school revision.

What's inside

• Core Class 4 Science concepts explained simply, each backed by short concept videos through Oswaal.AI (free digital support linked from the book).
• Crisp notes and mind maps for fast revision before the exam.
• Graded practice across Level 1, Level 2 and the Achievers section, plus full-length practice papers to simulate the real Olympiad format.
• Because the questions are drawn from actual past papers, a child gets used to the style of NSO questions, not just the content.

Who it's for

• A Class 4 child preparing for NSO or a comparable school/national Science Olympiad.
• Parents who'd rather their child practise on real past questions than generic science worksheets.
• Families already using an Oswaal "One For All" book for another subject, since the format and Oswaal.AI login carry over.

Where it falls short

• It assumes the Class 4 syllabus is already reasonably solid. If basic concepts are shaky, work through the school textbook chapter first, then this book's practice for that chapter.
• The concept-video support needs an internet connection — not a fully offline resource.
• Buy the current edition; Olympiad question style shifts slightly year to year and an old edition won't reflect that.

How to use it

1. One chapter a week, ideally matched to what's currently being taught at school.
2. Do Level 1 questions first, then Level 2, and save the Achievers section for last — it's deliberately the hardest.
3. In the final few weeks, work through the full-length practice papers under a loose time limit to build exam stamina.

Verdict

For a Class 4 child sitting a Science Olympiad, this is a focused, well-organised single book: real past-paper questions, chapter-wise structure, and free video help when a concept needs more explaining than the notes give.

Check the current price of the Oswaal Class 4 Science Olympiad Prep-Guide on Amazon →