Ferdinand | EducationGhana | July 06 |Science Practical Diagrams and Explanations for WASSCE 2025: Your Ultimate SHS Guide
Ace your WASSCE 2025 Science Practical exam with this complete guide on essential diagrams and their explanations for Biology, Physics, Chemistry, and Integrated Science.
Why Science Practicals Matter in WASSCE 2025
Science practicals are more than just school lab work—they make up Paper 3 of your WASSCE Science subjects and carry significant marks that influence your overall grade.
Paper 3: The Practical Exam Format
This section tests your ability to:
Draw and label scientific diagrams
Conduct experiments or observations
Record and interpret data
Contribution to Final Grade
Practical exams carry 30–40% of your WASSCE science subject marks, so mastering them is critical to getting A1.
Subjects Covered in WASSCE Science Practical Exams
Integrated Science
Focuses on basic lab techniques, ecological tools, food tests, and weather instruments.
Physics
Covers experiments like:
Measuring resistance
Determining acceleration
Light ray experiments
Chemistry
Expect tests on:
Acid-base titration
Gas collection
Flame tests
Biology
Includes:
Cell structure
Germination
Plant and human anatomy
Common Diagrams You Must Master for WASSCE 2025
| Subject | Diagram Topics |
|---|---|
| Biology | Plant Cell, Animal Cell, Heart, Germination, Leaf |
| Physics | Circuits, Voltmeters, Pendulums, Light Rays |
| Chemistry | Titration Setup, Gas Tests, Apparatus Labelling |
| Integrated Science | Rain Gauge, Food Tests, Soil Testing Tools |
Biology Practical Diagrams and Their Explanations
Labeled Plant Cell vs. Animal Cell
Plant cells have a cell wall and chloroplasts
Animal cells lack both
Clearly label the nucleus, cytoplasm, and vacuole
The Heart and Circulatory System
Show left/right atrium and ventricles
Indicate oxygenated vs. deoxygenated blood flow
Include arteries and veins
Germination Process in Beans or Maize
Three stages: soaking, sprouting, full root/shoot development
Draw and label cotyledons, radicle, and plumule
Leaf Cross-Section and Stomata
Include layers: cuticle, epidermis, mesophyll
Label stomata and guard cells
Physics Practical Diagrams and Their Functions
Series and Parallel Circuits
Use clear loops and battery symbols
Label resistors (R1, R2) and power source
Voltmeter and Ammeter Connection Diagrams
Ammeter goes in series
Voltmeter goes in parallel across components
Simple Pendulum Setup
Draw string, bob, fixed point
Indicate point of release and equilibrium position
Ray Diagrams for Reflection and Refraction
Use straight lines with arrows
Include normal line, angles of incidence and reflection/refraction
Chemistry Practical Diagrams and Observations
Titration Setup
Label burette, conical flask, pipette, and stand
Show acid/base combination
Flame Test Apparatus
Include Bunsen burner and sample on a loop
Indicate flame color for sodium, potassium, calcium
Test Tube and Gas Collection Setups
Label delivery tube, water trough, and collecting jar
Match gases to their identifying tests (e.g., CO₂ and limewater)
Thermometer in a Water Bath Experiment
Show heating setup with a beaker and thermometer
Label temperature reading point
Integrated Science Diagrams You Must Not Ignore
Wind Vane and Rain Gauge
Wind vane points in the direction wind is coming from
Rain gauge must have collection funnel and measuring cylinder
Soil pH Testing Tools
Label test tube, soil sample, and pH indicator
Match results with color scale
Food Test Setup (Starch, Protein, Fats)
Test for starch: iodine (blue-black)
Protein: Biuret reagent (purple)
Fats: ethanol test (white emulsion)
How to Draw Scientific Diagrams Correctly in WASSCE
Use of Pencil and Ruler
Always use sharp pencils
Draw neat lines and boundaries
Labeling Techniques and Best Practices
Labels go outside the diagram
Use horizontal lines to avoid clutter
Block letters improve legibility
Common Diagram Drawing Mistakes
Overlapping labels
Drawing with pen
Failing to indicate direction or flow
Tips to Score High in Science Practical Exams
Practice Weekly with Diagrams and Past Papers
Use past practical questions from WAEC
Repeat key diagrams every weekend
Time Yourself During Practice Sessions
Simulate real Paper 3 conditions by practicing for 90 minutes at a stretch.
Consult Science Teachers for Feedback
Ask your teachers to mark your drawings based on:
Clarity
Correct labeling
Accuracy
Resources for Learning Practical Science Diagrams
Recommended SHS Textbooks
Essential Biology, Chemistry, and Physics (NaCCA-approved)
Integrated Science for SHS by Dr. Yeboah
YouTube Science Tutorial Channels
Educational Websites and Apps
Internal Links to SHS Science Exam Guides
External Links to WAEC and Science Education Platforms
FAQs on Science Practical Diagrams and Explanations for WASSCE 2025
Q1: How many diagrams should I know for WASSCE Paper 3?
At least 3–5 key diagrams per science subject.
Q2: Can I label inside the diagram?
No. Always label outside using straight lines and block letters.
Q3: What’s the best way to improve diagram accuracy?
Daily sketching with correction from a teacher.
Q4: Will there be drawing in Integrated Science Paper 3?
Yes. Expect diagrams of tools, setups, or ecological instruments.
Q5: What drawing materials should I bring to the exam?
Pencils (HB or 2B), eraser, ruler, and a sharpener.
Q6: Can I be penalized for spelling mistakes in labels?
Yes. Scientific accuracy includes spelling and terminology.
Conclusion: Master Your Science Practicals with Confidence
The WASSCE 2025 Science Practical paper is not just about drawing—it’s about accuracy, confidence, and understanding. By mastering common diagrams and knowing their purpose, you can secure vital marks and boost your overall grade. Start preparing now—and make your practical paper your strongest!
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