Grade 9: What your child will learn and should know by the end of the year

Number and Algebra

Real numbers

Solve problems involving direct proportion. Explore the relationship between graphs and equations corresponding to simple rate problems (ACMNA208 – Scootle )

Apply index laws to numerical expressions with integer indices (ACMNA209 – Scootle )

Express numbers in scientific notation (ACMNA210 – Scootle )

Money and financial mathematics

Solve problems involving simple interest (ACMNA211 – Scootle )

Patterns and algebra

Extend and apply the index laws to variables, using positive integer indices and the zero index (ACMNA212 – Scootle )

Apply the distributive law to the expansion of algebraic expressions, including binomials, and collect like terms where appropriate (ACMNA213 – Scootle )

Linear and non-linear relationships

Find the distance between two points located on the Cartesian plane using a range of strategies, including graphing software (ACMNA214 – Scootle )

Find the midpoint and gradient of a line segment (interval) on the Cartesian plane using a range of strategies, including graphing software (ACMNA294 – Scootle )

Sketch linear graphs using the coordinates of two points and solve linear equations (ACMNA215 – Scootle )

Graph simple non-linear relations with and without the use of digital technologies and solve simple related equations (ACMNA296 – Scootle )

 

Measurement and Geometry

Using units of measurement

Calculate areas of composite shapes (ACMMG216 – Scootle )

Calculate the surface area and volume of cylinders and solve related problems (ACMMG217 – Scootle )

Solve problems involving the surface area and volume of right prisms (ACMMG218 – Scootle )

Investigate very small and very large time scales and intervals (ACMMG219 – Scootle )

Geometric reasoning

Use the enlargement transformation to explain similarity and develop the conditions for triangles to be similar (ACMMG220 – Scootle )

Solve problems using ratio and scale factors in similar figures (ACMMG221 – Scootle )

Pythagoras and trigonometry

Investigate Pythagoras’ Theorem and its application to solving simple problems involving right angled triangles (ACMMG222 – Scootle )

Use similarity to investigate the constancy of the sine, cosine and tangent ratios for a given angle in right-angled triangles (ACMMG223 – Scootle )

Apply trigonometry to solve right-angled triangle problems (ACMMG224 – Scootle )

 

Statistics and Probability

Chance

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 – Scootle )

Calculate relative frequencies from given or collected data to estimate probabilities of events involving ‘and’ or ‘or’ (ACMSP226 – Scootle )

Investigate reports of surveys in digital media and elsewhere for information on how data were obtained to estimate population means and medians (ACMSP227 – Scootle )

Data representation and interpretation

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 – Scootle )

Construct back-to-back stem-and-leaf plots and histograms and describe data, using terms including ‘skewed’, ‘symmetric’ and ‘bi modal’ (ACMSP282 – Scootle )

Compare data displays using mean, median and range to describe and interpret numerical data sets in terms of location (centre) and spread (ACMSP283 – Scootle )

Leave a Reply

Your email address will not be published. Required fields are marked *