11+ Non-Verbal Reasoning: How to Tackle Nets and Cubes

Why Nets and Cubes Appear in the 11+

Nets and cubes questions are a staple of the Non-Verbal Reasoning paper, and they are widely regarded as one of the trickier topics children face. The reason is straightforward: these questions require your child to mentally convert a flat, two-dimensional shape into a three-dimensional cube — or the reverse. That kind of spatial reasoning does not come naturally to every child, but the good news is that it responds extremely well to practice and technique.

If your child is working through Non-Verbal Reasoning topics more broadly, nets and cubes is a topic worth giving extra attention to. Once the core techniques click, children often find they can answer these questions quickly and accurately.

What the Questions Look Like

In the exam, nets and cubes questions typically take one of two forms:

• “Which cube can be made from this net?” — The child is shown a flat net with patterns or shapes on each face and must choose the correct cube from several options.
• “Which net can be made from this cube?” — The child is shown a cube and must identify the correct unfolded net.

Each face of the cube usually carries a distinct symbol, line, or shading, and the challenge lies in tracking how those markings move and rotate as the net is folded.

Did you know? There are 11 different ways to draw a valid net of a cube, but the two most common layouts in exam questions are the cross shape and the T shape. Getting comfortable with these two covers the vast majority of what your child will encounter.

The Opposite Faces Rule

This single technique can transform how your child approaches nets questions. It works as an elimination tool, allowing them to rule out wrong answers before doing any detailed folding.

Here is how it works:

1. Number or label each face of the net from 1 to 6.
2. Identify opposite pairs. On a standard cross-shaped net, faces 1 and 6, 2 and 3, and 4 and 5 are opposite each other when folded.
3. Check the answer options. Any cube that shows two opposite faces next to each other cannot be correct — opposite faces can never be visible at the same time on a cube.

This rule alone often eliminates two or three wrong answers instantly, leaving your child with far fewer options to reason through in detail.

Tip: Encourage your child to always check for opposite-face violations first before attempting to mentally fold the net. It is the fastest way to narrow down the options and saves valuable time in a timed exam.

Folding and Rotation: What to Watch For

After eliminating answers using the opposite faces rule, your child will need to mentally fold the remaining options to find the correct cube. Here are the key things to pay attention to:

• Direction of symbols. When a face is folded, arrows, lines, and shapes may rotate. A line that runs vertically on the net may appear horizontal on the cube, depending on the direction of the fold.
• Which face ends up where. If the circle is on top, what should appear on the left? On the right? Children need to trace the fold step by step rather than guessing.
• Mirror traps. Some wrong answers are mirror images of the correct cube. These are designed to catch children who are almost right but have not tracked the rotation carefully enough.

A Step-by-Step Approach for Exam Day

When your child encounters a nets question in the exam, this sequence keeps them efficient and accurate:

1. Identify the net layout — is it a cross, a T, or another shape?
2. Mark opposite faces mentally or with a light pencil mark.
3. Eliminate any answer that shows two opposite faces together.
4. Pick a reference face — choose one face on the net (ideally one with a distinctive symbol) and find it on the remaining answer options.
5. Fold from that face — mentally fold the net and check whether the adjacent faces match.
6. Confirm the answer by checking that at least two or three visible faces are correctly positioned and oriented.

Building Spatial Awareness at Home

Nets and cubes become far less intimidating when children have hands-on experience with three-dimensional shapes. Here are some practical ways to build that spatial confidence:

Tip: A simple and effective exercise is to give your child a cube with different stickers or drawings on each face and ask them to draw the net without unfolding it first. Then unfold the cube and compare. This builds exactly the mental skill the exam tests.

Starting with physical models and then moving to paper-based or app-based practice is an effective progression. As your child’s confidence grows, they will rely less on physical folding and more on the mental techniques that save time in the exam. For more on structuring a broader revision plan, our complete guide to 11+ exam preparation covers how to balance different subjects and topics effectively.

Common Mistakes to Avoid

• Rushing without eliminating first. The opposite faces rule is quick to apply and catches easy errors. Skipping it means relying entirely on mental folding, which is slower and more error-prone.
• Ignoring rotation. Children often identify the correct faces but forget that a symbol may have rotated during folding. Always check the orientation of lines, arrows, and asymmetric shapes.
• Confusing adjacent and opposite faces. On a T-shaped net, the opposite pairs are different from those on a cross-shaped net. Children need to practise both layouts.

Practise With the Right Tools

Nets is one of eight Non-Verbal Reasoning topics covered in our 11+ Non-Verbal Reasoning app, which includes 210 questions across visual patterns, sequences, codes, odd one out, spatial reasoning, and more. Practising nets questions within a structured app lets your child build familiarity with the question format, track their progress, and identify areas that need further work.

Combined with our other Non-Verbal Reasoning strategies, regular nets practice helps children approach this challenging topic with confidence rather than anxiety.

Across our full suite of 7 specialist 11+ apps, children have access to over 3,400 questions covering Non-Verbal Reasoning, Verbal Reasoning, Maths, English, and Vocabulary — everything they need for thorough, well-rounded exam preparation.