Hidden shapes is one of the standard non-verbal reasoning patterns in GL-style 11+ papers: you are given a simple target shape and must find which of five complex figures contains it, complete and unbroken, somewhere inside. It looks like a spot-the-difference puzzle, but it is really a test of disciplined looking. NVR rewards method over talent more than any other 11+ subject, and children who learn to interrogate a figure systematically routinely overtake 'naturally spatial' peers who rely on a quick glance and a guess.
What the hidden shapes question looks like
At the top or left you are shown a single outline shape, often a plain triangle, arrow, L-shape or irregular quadrilateral. Below or beside it sit five answer options (A to E), each a busy figure made of overlapping lines. Exactly one option contains the target shape hidden among the clutter, at its true size and proportions, though it may be rotated. Your job is to find that one. Expect several of these per paper. In reasoning-only regions such as Lincolnshire, NVR can carry roughly half the total marks, so a reliable method here directly lifts the score that matters for a grammar place.
Why this type belongs to the NVR family
Hidden shapes sits alongside the other GL non-verbal families your child will meet: series and sequences, analogies, matrices, odd-one-out, rotations, reflections, shape codes and cube nets. It draws on the same core skill as all of them, the ability to hold a shape steady in the mind and compare it against what is on the page. If your child can master the scanning discipline here, it transfers straight into matrices and rotation questions. The full NVR types list maps how each family connects, and it is worth reading so hidden shapes is understood in context rather than in isolation.
A reliable step-by-step method
Guessing wastes the tight time budget. Teach this fixed routine and drill it until it is automatic:
- Fix the target's proportions. Say it precisely: "a long thin right-angled triangle", not "a triangle". The exact shape and its side lengths are what you are hunting.
- Count the sides and corners. Note how many straight edges the target has and whether any corners are right angles. This becomes your checklist.
- Trace with your pencil. In each option, follow candidate lines with the pencil tip, trying to draw the target's outline over the figure. If every edge is present and unbroken, you have found it.
- Rotate the page. If the exam allows it, physically turn the paper. Orientation is the single biggest reason a correct answer hides in plain sight.
- Eliminate. Cross off any option where a needed line is missing or a corner is the wrong angle. Process of elimination is faster than proving the winner outright.
The classic traps
The examiners build wrong options that are deliberately tempting. Knowing the traps in advance is half the defence:
- The similar-but-different shape. An option contains a shape that is nearly the target but slightly the wrong proportion, for example a triangle that is too squat. Focus on proportion, not just "is there a triangle here".
- The rotated instance you missed. The target is present but turned, so a child who only checks the upright orientation walks past it. Always check every rotation.
- The broken outline. The lines are all there but the shape is split by an intersecting line so it is not a single continuous figure. The hidden shape must be complete and closed.
- The size decoy. A shape of the right form but the wrong scale. The hidden shape appears at its true size.
The attributes to scan every time
When a child freezes, it is usually because they are looking without a checklist. Give them one fixed set of things to scan:
| Attribute | Question to ask |
|---|---|
| Number of sides | Does this shape have the same edge count as the target? |
| Corner angles | Are the right angles or sharp points in the same places? |
| Proportion | Is it long and thin, or short and wide, exactly like the target? |
| Size | Is it at the target's true scale, not shrunk or enlarged? |
| Orientation | Have I checked it rotated 90, 180 and 270 degrees? |
| Completeness | Is the outline unbroken and fully closed? |
Timing and pacing
GL NVR papers are tightly timed, roughly 35 to 50 seconds per question, so hidden shapes must be quick. Coach a two-pass approach: on the first pass, solve the options that jump out and mark any that need real tracing with a small dot; on the second pass, return to the dotted ones with the time you have banked. Tell your child that leaving a hard question and coming back is a strategy, not a failure. A printable pacing card taped above the desk keeps the seconds-per-question target visible during home practice.
How the score is built: the Standardised Age Score
GL raw marks are converted into a Standardised Age Score (SAS), age-adjusted to the exact month so younger children in the year are not disadvantaged. The scale runs roughly 69 to 141 with 100 as the average, and many grammar schools look for around 111 or above, though the exact qualifying mark varies by area and year. The practical point for parents: getting the trickier hidden-shape and rotation questions right is what pushes an SAS upward, so time invested in this type pays off in the score that decides a place.
How to practise this type at home
Do hidden shapes in short, focused bursts of about ten questions, then mark them and review every error out loud: "what property did I miss, the angle or the rotation?" A wrong answer is diagnostic, so treat marking as coaching rather than scoring. Our free NVR worksheet sets isolate each pattern so your child can drill hidden shapes on its own, timed mock papers knit the types back together at real exam pace, and the revision hub sequences everything from Year 4 foundations to Year 6 timed refinement. For a full picture of the GL and CSSE format your child will face, the exam guides set out what each board expects.
Frequently asked questions
How many hidden shapes questions are in a paper?
It varies, but expect several within a full GL NVR section. GL does not disclose in advance which of its non-verbal families will appear or in what number, so practise all of them, with extra attention to the ones your child finds hardest.
Can the hidden shape be rotated?
Yes. The target may appear turned to any angle inside the figure, but it will always be at its true size and its outline will be complete. This is exactly why rotating the page, or mentally rotating the shape, is a core part of the method.
What score does my child need?
Most grammar schools work from a Standardised Age Score of around 111 or above, but the precise pass mark differs by region and by year and is not something to treat as fixed. Focus on steady accuracy across every NVR type rather than a single number.