Class 4 · Science

Class 4 Science Olympiad practice

10 teacher-reviewable published papers are currently available, with answer explanations and learning support after practice.

Class-specific guide

What is Class 4 Science Olympiad practice?

Class 4 Science Olympiad practice applies concepts from living systems, health, matter, force, energy, Earth, space, natural resources, and the environment. OPH uses question-first practice so children attempt a problem, check their answer, and learn from the reviewed explanation.

Syllabus and topic summary

What children will practise

Topics and skills

Intersection of date rangesSymbol counting in an arrangementUnit cubesLines of symmetryMirror image of a given figureNumber sequence completionOdd one outLetter code substitutionMeaningful word from numbered lettersSubstitution / coded naming

Living and non-living things

The human body and healthy habits

Plants, animals, matter, and the environment

Scientific observation and reasoning

Live availability

published practice papers

Suitable for

Class 4 children preparing for more detailed, reasoning-led Olympiad questions.

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Genuine question preview

Sample from published OPH content

Sample 1 · Intersection of date ranges

A science fair is after 17 June but before 21 June. A second clue says it is after 18 June but before 20 June. On which date is it?

A. 17 June

B. 18 June

C. 19 June

D. 20 June

Sample 2 · Symbol counting in an arrangement

A display reads A7, #, 3B, *, C9 and @. After removing every symbol that is neither a letter nor a digit, how many letters and digits remain?

A. 5

B. 6

C. 7

D. 8

Sample 3 · Odd one out

Which photographed object belongs to a different group from the other three?

A. Ruler

B. Eraser

C. Sharpener

D. Spoon

Answers are intentionally hidden on this public page. The practice experience checks each response and then provides explanation-led learning.

Package access

What is included

₹149

180 days of access

✓ Access to published Class 4 Science papers included in the package
✓ Per-question answer checking and explanations
✓ Learning notes where supplied by the reviewed question bank
✓ Results, incorrect-question practice, and parent progress tracking

Class 4 Science lessons, practice papers, questions with explanations and learning notes.

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Learning guidance

How OPH practice is different

Attempt first

Children answer before seeing the explanation, encouraging active recall instead of passive reading.

Learn from correction

Checked answers show the reviewed reasoning and learning notes supplied with the question.

Review progress

Parents can see results and children can return to incorrect questions for focused practice.

Content review: OPH teacher-review workflow · Page reviewed 21 August 2026 · Found a content issue? Read our editorial and correction policy.

Parent questions

Before your child starts

How many Class 4 Science papers are available?+

10 published papers are currently available. This count is read from the live OPH catalogue and updates when papers are published.

Will my child see explanations after answering?+

Yes. During paid practice, a checked answer shows whether it is correct and displays the reviewed explanation. Learning notes are also shown where they are included in the question bank.

Can a parent review results and weak areas?+

Yes. Completed attempts show the score, correct, incorrect and unanswered counts, question-level review, and progress information for the linked child.

How long does package access last?+

The currently active matching package provides 180 days of access. Confirm the package name, included subjects, price, and validity on the Pricing page before payment.

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