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Science Revision Guides

PSLE Science evaluates students on both content knowledge and process skills. The paper is split into Booklet A (28 MCQs, 56 marks) and Booklet B (12 Open-ended questions, 44 marks). Students must study five key domains: Cycles, Systems, Energy, Interactions, and cross-cutting Scientific Inquiry skills.

📚 10 core topics | ✍️ Updated for 2026 | 🛡️ MOE Syllabus Aligned

Cycles

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P5-P6 · ⏱️ 9 min read

Reproduction in Plants & Animals

Understand plant and human reproduction processes, cell structures, pollination, fertilisation, and how genetic traits are inherited.

#pollination#fertilisation#seed dispersal#germination
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P5-P6 · ⏱️ 8 min read

Water Cycle & States of Matter

Study the water cycle, processes of melting, boiling, evaporation, and condensation, and how heat exchange drives states of matter changes.

#evaporation#condensation#melting & freezing#water cycle

Systems

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P5-P6 · ⏱️ 7 min read

Plant Transport System

Explore xylem and phloem tube systems in plants. Understand how water, mineral salts, and food are transported throughout the plant organism.

#water transport#food transport#plant parts
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P5-P6 · ⏱️ 8 min read

Electrical System & Circuits

Understand open vs closed circuits, conductors, insulators, and the differences in bulb brightness in series and parallel circuit configurations.

#series circuit#parallel circuit#conductors

Energy

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P6-NEW · ⏱️ 8 min read

Photosynthesis & Respiration

Study the raw materials and products of photosynthesis, factors affecting its rate, and how plant respiration compares to it.

#photosynthesis#respiration#Sun as energy source
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P6-NEW · ⏱️ 7 min read

Energy Forms & Conversion

Identify six key forms of energy and trace energy conversions in various appliances, mechanical toys, and falling objects.

#energy forms#energy conversion#conservation

Interactions

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P6-NEW · ⏱️ 9 min read

Interaction of Forces

Explore gravitational, frictional, magnetic, and elastic spring forces. Learn how forces affect motion, shape, and direction of objects.

#frictional force#gravitational force#elastic spring
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P6-NEW · ⏱️ 9 min read

Food Chains, Food Webs & Ecosystems

Learn about food webs, energy transfer in trophic levels, animal adaptations, structural vs behavioral features, and environmental balance.

#food chains & webs#adaptation#producers & consumers

Cross-cutting Skill (Booklet B)

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P1-P6 · ⏱️ 10 min read

Scientific Inquiry & Exam Skills

Essential exam strategies for Booklet B open-ended questions. Learn variables control, hypothesis writing, and scientific reasoning structures.

#hypothesis#variables#fair test#data analysis#conclusion

Frequently Asked Questions