Introduction
Whether you’re returning to maths after a break or just looking to brush up on key numeracy skills, this page is here to help. You'll revisit essential concepts such as recognising the features of a circle, doubling and halving, squares and square roots, and reading scale plans—skills that are particularly useful in many TAFE courses and trade-related fields.
Self-analysis
Before you begin, take a moment to reflect on your current confidence with these topics.
Features of a circle
Watch the video below to learn what is meant by circumference, radius and diameter. These are terms you are likely to come across if you are studying a traditional trade.
Practice
Read the problem on the slide and try to work out the answer. Move to the next slide when you are ready to check your thinking.
Doubling and halving
Watch the video below, which explains how you double and half something. Afterwards, complete the task to practice what you have learned.
Practice
Try the task below to check your knowledge. If you are getting the answers incorrect, watch the video again.
Applying your learning
Reflect on what you have learned in this material and consider how you can use it in your own work. Consider:
- What is one concept you feel confident about?
- Which concept do you need to practise more?
- What is one action you can take this week to improve your understanding?
Useful strategies
To further reinforce these concepts, consider:
- Drawing diagrams (e.g. a circle) and label its features (circumferences, radius and diameter)
- Writing out square numbers up to 12² and look for patterns
- Finding floor plans and/or maps with different scales and calculate real-world distances
- Using mnemonics like “D=2R” (Diameter = 2 × Radius) to remember relationships between terms
Next steps
- Identify where these mathematical skills are relevant in your coursework. For example, trade students may need to calculate materials, read blueprints, or measure accurately.
- Use workplace scenarios—such as calculating materials needed for a project—to apply these concepts.
- Explore tools such as MathsOnline and online calculators for doubling/halving.
- Discuss assignments with classmates, explaining mathematical concepts to reinforce your understanding.
- Ask your instructor or tutor to review your calculations and suggest improvements.
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Did you know CDU Language and Learning Advisors offer a range of study support options?
https://www.cdu.edu.au/library/language-and-learning-support
