About this working scientifically: fair tests and variables practice

Working scientifically: fair tests and variables is taught in KS2 Years 3-6 (ages 7-11) as part of the England national curriculum. This free practice set covers designing a fair test by changing one variable, measuring another, and keeping the rest the same through 30 interactive questions, working up from easy warm-ups to harder problems.

What you'll practise

Each session gives you 30 questions in mixed difficulty: a few simple ones to start, some two-step questions next, then word problems at the end. If you get stuck, tap for a hint. After every answer you get a short explanation, right or wrong, so you can see why.

Question types in this set: multiple choice, true or false, drag-to-order, fill the blank, word matching.

Example question

What is a variable in a scientific test?

Curriculum coverage

This is on the KS2 Science programme of study for Year 3 and Year 4 and Year 5 and Year 6. The questions follow the same order schools use, starting with concrete examples and moving on to more abstract reasoning, so practice here lines up with what your child is doing in lessons. British English throughout, with British units, currency and spelling.

Frequently asked questions

What is working scientifically: fair tests and variables in KS2 science?

Designing a fair test by changing one variable, measuring another, and keeping the rest the same. It is on the KS2 science curriculum for Years 3-6 and gets revisited in later years too.

What year group is working scientifically: fair tests and variables taught in?

Working scientifically: fair tests and variables is first introduced in Years 3-6. Children usually meet it again in later years as the work gets harder.

Is the working scientifically: fair tests and variables practice really free?

Yes. All 30 questions are free, with no signup, no payment and no time limit. Your progress is saved in your browser.

How does the practice work?

Each session gives you 10 questions of mixed difficulty. Correct answers add 8 to 12 points to your SmartScore; wrong answers take some off. Get to 80 to mark the concept as complete. Hints are there if you need them, and every answer comes with a short explanation.

Related science concepts

• 💧States of matter
• 🔥Changing states
• 🔊Sound
• ⚡Electricity & circuits

More practice by year

• Year 3 practice
• Year 4 practice
• Year 5 practice
• Year 6 practice
• All Science concepts

Practice content matched to the England national curriculum for KS2 (Years 3-6). Questions use British English throughout.