Home > Subjects > Mathematics > Level 2 - CAS Mathematics > 2.4 Mathematical processes (AS90809) > Key tips
- Subject: Mathematics
- AS: 90809
- Level: 2
- Credits: 5
- Internal
CAS Mathematics 2.4 Demonstrate an understanding of straightforward mathematical processes
Key tips
- Revise basic algebra skills used in CAS Algebra 1.1 and CAS Graphs 1.2.
- Understanding of mathematical processes will be assessed within the contexts of algebra, graphing, and calculus, without the use of electronic technology.
- Attempt all questions, since evidence from higher level questions can be used towards gaining Achievement.
- Set solutions out logically, using correct mathematical statements.
- Be careful to copy terms correctly from step to step.
- Show all working as credit may be given for a minor slip or a term that has been incorrectly transferred, if the assessor can see what you have done.
- Do not round until the end of the problem.
- Check that you answer the question that is asked and relate your answer to the context of the problem.
- You should know how to model a situation using an equation, so practise selecting variables and writing equations to solve word problems.
- When solving a quadratic equation to answer a question in context, check that you have selected or used the correct solution. Both answers may not be relevant in the context given.
- Practise using the specific mathematical language to identify each of the features of a graph.
- The key features of graphs may be x and y intercept(s), turning points, axis of symmetry, horizontal and vertical asymptotes, or centre and radius of circle.
- For Achievement with Merit, interpreting features of a graph requires you to relate features, such as intercepts and turning points, to the real-life situations that the graph represents.
- Practise using
, 
and 
notations. - Practise differentiation and integration of terms.
- A geometric proof will involve a multi-step manipulation of a given algebraic statement to generate another given expression.
- For Achievement with Merit and Achievement with Excellence, you may be required to use correct mathematical statements and should present your work in a logical manner.
