Tap the step where the line rises the most. Then say by how many books it rose across that step.
This engine’s own main skill is Reading values off a line graph. It practises compare line-graph change alongside it.
The steepest rise is from Tuesday to Wednesday: the line goes from 15 to 30, a rise of 15. Every other step on this graph moves less than that, which is what makes this one the answer rather than merely a big move. Counting the gridlines between the two ends gives the same number as subtracting, and the lines here go up in 5s. The steepest step is the one that climbs the most lines, not the one that ends highest.
Step 1. Find it. Tap the steepest step of the line.
Step 2. Read it. Now read the scale and choose how many books that is.
What to say if they get stuck
Find the bar, row or slice the question names before you read anything. Getting the label right matters as much as the reading.
The scale does not always count up in single steps. Work out what a single line is worth before you read anything off it.
Keep your finger level as you slide from the board across to the scale. Drifting up or down by a line is the commonest slip there is.
The 11+ does not test these skills in isolation, and practising one in the wrong order wastes the practice. These are the skills the curriculum map connects this one to.
A change comparison requires accurate plotted values.
How compare line-graph change differs from the skills beside it
The same exercise practises one other skill, and telling them apart is often the difficulty rather than the exercise itself. On this page the skill is: compare one change or gap between plotted values, and it stops where excludes extrapolation beyond the graph.
Questions parents ask about compare line-graph change
Answered from what the skill map records about this skill, not from a template. Every answer here is on the page, and the same questions are the page's FAQ structured data.
Compare one change or gap between plotted values. It is one of 55 named maths skills in the 11+, in the data strand, and this page carries 1 interactive exercise that practises it.
The skill map puts read a line-graph value first. A change comparison requires accurate plotted values. If compare line-graph change keeps going wrong, that is the thing to check before doing more of this one.
The highest point on the graph is not the biggest step - a step is the gap between two neighbouring points. The wrong answers on this skill are built out of that, not out of random numbers, so it is worth naming out loud before your child meets it under time pressure.
Point at the next move rather than explaining the whole rule. Work out the fall for each pair of neighbouring points in turn, then compare those steps rather than the plotted heights.
The skill map draws the line here: Excludes extrapolation beyond the graph. A question past that line is testing a different named maths skill, which is worth knowing before you spend a week practising the wrong one.
The data strand holds 9 skills that are tested together, and the pages next to compare line-graph change are compare table values, decode a pictogram key and interpret a pie-chart sector. Each has its own exercise and its own link, and none of them needs an account.
Use Line Reader, embedded on this page. It is the exercise the skill map attaches to compare line-graph change, it runs in the browser with no account to make, nothing is scored, and nothing a child does here is recorded or sent anywhere. It also has its own link, so you can send it to a child without sending them anywhere else first.
Compare line-graph change rests on something else being secure first
This skill depends on read a line-graph value. A free diagnostic checks those alongside every other maths skill, so you find out whether the problem is here or underneath it.
