Experiment-centric questions are increasingly common in primary school examination papers today.
There are typically six types of experimental-centric questions that can be tested:
- Relationship – What is the relationship between X and Y?
- Fair Test – How do we ensure a fair test?
- Reliability – How can the experiment be more reliable?
- Aim – What is the aim of the experiment?
- Conclusion – What can you conclude from the experiment?
- Control Set-up – What is the purpose of the control set-up?
I’m sure you’ve probably seen a variation of one of the above questions in your child’s examination paper.
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Many students often struggle to structure their answers in a coherent & scientific manner, thus causing them to lose marks unnecessarily.
The good news is that we know what are the possible experiment-centric questions that can be tested!
We’re able to help your child prepare these answers ahead of their examinations & execute them when they see something similar. 🙂
Isn’t that amazing?
Today, we’ll be looking at how to tackle control set-up questions. It is often expressed in the following format:
What is the purpose of the control set-up?
For this particular question, students are often able to identify the changed variable and the measured variable in the question. The challenge lies in using the correctly identified variables to structure their answers properly.
As such, I would like to introduce a template answer to help your child with control set-up questions.
A control set-up is often needed to ensure that the experiment is valid & accurate. It serves a baseline for the comparison of the results of the main experiment.
The control set-up will also rule out other environmental variables from affecting the results and eventually help to establish the conclusion of the experiment.
Ultimately, the control set-up is in place to ensure that the measured variable (dependent variable) is affected only by the changed variable (independent variable) and not any other variable in the experiment.
The purpose of preparing Set-up _ is to act as a control set-up to ensure that the _____________ (measured variable) is only caused by the ___________ (changed variable) and not any other variables in the experiment.
With reference to part (b) of the above question…
The purpose of preparing Set-up B is to act as a control set-up to ensure that the change observed in the limewater (if any) is only caused by the gas produced during decomposition and not any other variables in the experiment.
It takes time for your child to change the way he/she answers the PSLE Science questions so starting early is key!
In this 3-hour masterclass, we’ll be tackling the 6 types of experiment-centric questions:
- What is the AIM of the experiment?
- What is the RELATIONSHIP between X & Y?
- What does one keep X the same to ensure a FAIR TEST?
- How do we ensure that the results of the experiment are RELIABLE?
- What’s the purpose of the CONTROL SET-UP?
- What can you CONCLUDE from the results of the experiment?
Visit https://thepiquelab.com/experimental-techniques-masterclass/ to learn more about the 3-hour masterclass 🙂
Lim Zi Ai
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