Having a visual way to explore equations makes a world of difference for a student’s confidence. Online Year 9 maths tutoring works best when it’s active: shared whiteboards, live questions and a tutor who can see their working as it happens.
Year 9 maths gets more abstract, especially on the Path side. Letters stand for whole families of graphs, and rules arrive faster than the reasons behind them.
How a shared screen makes Year 9 graphs and triangles make sense
Desmos lets your child move a slider and watch a graph respond instantly. One number at a time, the letters in a rule stop being abstract.
| What we show live | What your child sees | The idea it locks in |
|---|---|---|
| A slider on m in y = mx + c | The line tilts steeper, flatter, or downhill as m changes | m is the gradient: how much y changes each time x goes up by 1 |
| A slider on c in y = mx + c | The whole line slides up and down without tilting | c is where the line crosses the y-axis |
| A slider on a in y = ax² | The parabola narrows, widens, and flips upside down when a goes negative | The sign and size of a control the parabola’s shape |
| A right-angled triangle resized while the angle stays the same | The sides grow, but opposite ÷ hypotenuse stays exactly the same | That’s why sine, cosine and tangent depend only on the angle |
Which of these your child meets in Year 9 depends on their school’s Core and Path choices.
Working together on practice questions in real time
Sessions run on Google Meet with a shared digital whiteboard, and Desmos comes in whenever a graph helps. Your child can write on an iPad or type and draw with a mouse.
What a one-hour session looks like
- Check-in: how they’re feeling and what’s come up since last week.
- Set the focus: based on upcoming assessments and anything from previous sessions that still needs work.
- Predict, then check: your child sketches what they expect a graph to look like before typing it into Desmos.
- Work through it together: your child drives the practice on the whiteboard, with the tutor watching each line.
- Review and next steps: a quick recap, written into the shared Google Doc with what to practise before next time.
The prediction step is where understanding shows. A student who can sketch y = −2x² + 3 before seeing it understands the rule, while one who can only plot points from a table is still following steps.
Why memorising rules leaves Year 9 students feeling stuck
In Year 9, the number of rules grows quickly. A student relying on memory alone has more to hold onto every week, and one forgotten rule can sink a whole question.
A student who has watched what each number does can rebuild a rule they’ve forgotten. That’s especially valuable for students on a Path, where each new topic builds on the last.
How you’ll know it’s working
- They can sketch a straight line or parabola from its rule without plotting points.
- They can explain what changing one number in a rule would do to the graph.
- They can say why trigonometry ratios don’t change with the size of the triangle.
- They attempt unfamiliar questions by reasoning, instead of searching for a matching rule.
Marks and confidence sit on the tracker page at the top of the shared Google Doc, so you can see progress across the term.