Highly Difficult 2017 PSLE Science Question – Conquer It

The challenging 2017 PSLE Science Question

The 2017 PSLE Science question left many students scratching their heads. This question wasn’t just difficult—it exemplified the kind of higher-order thinking skills the PSLE is designed to test. By analysing the key concepts behind it, we gain a deeper understanding of why such questions are included in the Singapore Primary Science syllabus and how students can better prepare for similar challenges.

Halim found an animal in a stream deep in a forest.

Which of the following characteristics should she use to identify it as amphibian, fish or reptile?

(1) presence of gills

(2) type of body covering

(3) method of reproduction

(4) whether it can live both on land and in water

Below is how most students would have evaluated the four options.

Based on the flow chart above, we will not be able to arrive at an answer for this 2017 PSLE Science question as the maximum number of groups we can split the animals into for each condition is two.

Below is the schema students need to use to answer this question:

So, students need to dig a little deeper and realise that they will somehow need to further differentiate the classes of animals for one of the conditions. The only options that allow for this possibility are ‘type of body covering’ and ‘method of reproduction’.

This means students should ask themselves if reptiles and fish have different types of scales, or if reptiles, amphibians and fish lay different types of eggs (other interpretations of ‘method of reproduction’ such as method of fertilisation need not be considered because they are not covered in Primary School Science syllabus).

However, a quick survey of our students shows that distinguishing between different types of scales and different types of eggs is not something that is taught in every school or enrichment centre.

So, here’s what students actually need to know in order to answer the question.

What does this 2017 PSLE Science Question teach us? It’s always good to know a little more.

The Primary School Science syllabus is more concept rather than content-heavy, so teachers and parents should look out for opportunities to broaden students’ scientific horizons through interesting and engaging extension activities. This form of extension will not only deepen a student’s understanding of a scientific principle/concept, it will enrich their knowledge of the world around them.

Extra!

Options (1) and (4) can be eliminated using logic alone without the need for scientific knowledge. There are three categories of animals to be distinguished from each other, namely amphibian, fish and reptile. However, since option (1) and (4) are conditions that yield only two possibilities – ‘yes’ or ‘no’ – they can be eliminated straightaway.

How Can Students Tackle Such Questions?

To excel at questions like this, students need more than memorised facts. They need to:

• Understand key concepts deeply: A strong grasp of foundational topics, such as the water cycle and heat transfer, is essential.
• Practice interpreting complex scenarios: Regular exposure to challenging, application-based questions helps students build confidence.
• Explain their reasoning clearly: Open-ended questions reward students who can articulate their thought processes in a structured way.

How Joyous Learning Can Help

At Joyous Learning, we specialize in preparing students to tackle tricky PSLE Science questions like the one from 2017. Our PSLE Science classes focus on more than just theory. We emphasize:

1. Conceptual clarity: Our lessons break down complex scientific concepts into manageable pieces, helping students build a solid foundation.
2. Real-world application: Through hands-on experiments and real-life examples, students learn to see how science works beyond textbooks.
3. Critical thinking and problem-solving: We guide students in analysing scenarios, identifying relevant concepts, and structuring answers effectively.

Our experienced educators are passionate about turning science into an engaging and interactive subject. We believe that learning should not only prepare students for exams but also spark curiosity and a lifelong love for science.

📚 Why Parents Trust Joyous Learning Science Tuition

• Tailored lessons that focus on understanding and application.
• Proven strategies to boost clarity and precision in open-ended answers.
• A nurturing environment that builds confidence and exam readiness.

💡 Turn Struggles into Success Today!

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