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Skills available for Australia year 9 maths curriculum
IXL's year 9 skills will be aligned to the Australian Curriculum soon! Until then, you can view a complete list of year 9 objectives below.
Objectives are in black and IXL maths skills are in dark green. Hold your mouse over the name of a skill to view a sample question. Click on the name of a skill to practise that skill.
ACMNA210.a representing extremely large and small numbers in scientific notation, and numbers expressed in scientific notation as whole numbers or decimals
ACMMG220.b using the properties of similarity and ratio, and correct mathematical notation and language, to solve problems involving enlargement (for example, scale diagrams)
ACMMG220.c using the enlargement transformation to establish similarity, understanding that similarity and congruence help describe relationships between geometrical shapes and are important elements of reasoning and proof
ACMMG222 Investigate Pythagoras' Theorem and its application to solving simple problems involving right angled triangles
ACMMG222.a understanding that Pythagoras' Theorem is a useful tool in determining unknown lengths in right-angled triangles and has widespread applications
ACMMG224.b selecting and accurately using the correct trigonometric ratio to find unknown sides (adjacent, opposite and hypotenuse) and angles in right-angled triangles
ACMSP225 List all outcomes for two-step chance experiments, both with and without replacement using tree diagrams or arrays. Assign probabilities to outcomes and determine probabilities for events
ACMSP225.c comparing experiments which differ only by being undertaken with replacement or without replacement
ACMSP226 Calculate relative frequencies from given or collected data to estimate probabilities of events involving 'and' or 'or'
ACMSP226.a using Venn diagrams or two-way tables to calculate relative frequencies of events involving 'and', 'or' questions
ACMSP226.b using relative frequencies to find an estimate of probabilities of 'and', 'or' events
ACMSP227 Investigate reports of surveys in digital media and elsewhere for information on how data were obtained to estimate population means and medians
ACMSP227.a investigating a range of data and its sources, for example the age of residents in Australia, Cambodia and Tonga; the number of subjects studied at school in a year by 14-year-old students in Australia, Japan and Timor-Leste
Data representation and interpretation
ACMSP228 Identify everyday questions and issues involving at least one numerical and at least one categorical variable, and collect data directly and from secondary sources
ACMSP228.a comparing the annual rainfall in various parts of Australia, Pakistan, New Guinea and Malaysia
ACMSP282 Construct back-to-back stem-and-leaf plots and histograms and describe data, using terms including 'skewed', 'symmetric' and 'bi modal'
ACMSP282.b describing the shape of the distribution of data using terms such as 'positive skew', 'negative skew' and 'symmetric' and 'bi-modal'
ACMSP283 Compare data displays using mean, median and range to describe and interpret numerical data sets in terms of location (centre) and spread
ACMSP283.a comparing means, medians and ranges of two sets of numerical data which have been displayed using histograms, dot plots, or stem and leaf plots