Years 7–10 Numeracy Indicators In Year 7, students: In Year 8, students: CE 7 i. Calculating and estimating Numeracy square roots of perfect squares, e.g. 9, i. CE 9 CE 10 Interpret and use: positive and negative numbers index notation, e.g. positive integral indices and zero index irrational numbers, e.g. i. Select and combine strategies and procedures using mental and written strategies, with or without technologies, to carry out operations with rational numbers and integers to solve complex problems. Explain the method/s ii. Combine strategies and procedures to calculate solutions, recording values using representations, including scientific notation and negative indices in complex contexts. Explain the method/s i. Identify preferred mental and written strategies, select and use definitions, rules, representations and estimates, with or without technologies in calculations involving complex data and contexts. Explain the method/s iii. Identify various ways to solve problems involving complex data or situations and estimate a range of solutions ii. Interpret, clarify, and analyse the mathematical features and conditions of a situation. Use a range of strategies such as using models, rules or formulas to solve problems. Explain possible solutions • • • Apply knowledge of index laws to simplify expressions that include indices and perform calculations involving positive and negative indices, e.g. recognising that 5 -1 and 1 are equivalent expressions 5 64 ii. In Year 10, students: Students continue to apply knowledge of real numbers, indices, scientific notation and irrational numbers from previous year levels ii. Select or combine strategies including the application of the associative, commutative and distributive laws to aid mental and written computation to calculate solution/s iii. Identify relevant information, sort problems by concept, iii. strategies or procedures, such as matching a relationship to an informal rule and estimating a range of solutions Identify various ways to solve problems, including using factors, applying a rule and estimating a range of solutions iv. Check the reasonableness of solutions, using strategies including applying order of operations iv. Check the reasonableness of solutions, using strategies including iv. approximations of very large and very small numbers Check the reasonableness of solutions, including significant figures. Review the selection of rules and solutions against estimates iii. Check the reasonableness of solutions and review assumptions and methods of working v. Create financial plans, determine the best buys and calculate the unit costs of products, with or without technologies v. Create financial plans to solve problems involving profit and loss, with or without technologies. Compare and evaluate fees linked to consumer products Create financial plans to solve problems involving simple interest. Determine an amount (budget) to meet monthly or yearly needs iv. Apply simple interest formula to calculate compound interest and solve related problems v. Create financial plans, analyse the impact of debt and identify strategies for debt management v. PR 7 PR 8 PR 9 i. i. i. ii. Recognising and using patterns and relationships CE 8 Compare, order and position: positive and negative numbers, including fractions numbers given in index notation whole numbers as products of powers of prime numbers • • • • In Year 9, students: iii. Use letters to represent variables and write algebraic expressions for real-life situations Solve problems involving variables by: • Create and evaluate algebraic expressions by substituting a given value for each variable • Apply arithmetic laws to algebraic expressions, e.g. order of operation applies to patterns written in algebraic form • PR 10 Solve problems and make predictions involving application of i. patterns and algebraic expressions, using: simplifying (recognising groupings of like terms) e.g. 7x + 3x + 2y = 10x + 2y • factorising (writing equivalent equations when integers in the expression have a common factor) e.g. 9y + 6x = 3(3y + 2x) index laws (powers of a variable can be simplified) e.g. y2 × y3 = y × y × y × y × y = y 5 • distributive law (expanding by collecting like terms) e.g. calculating areas of a shape Make predictions and solve algebraic problems involving: simplifying using index laws factorising using common algebraic factors algebraic fractions with a common denominator substituting values into formulas • • • • expanding grouped representations e.g. 3(2x + 5y) = 6x +15y Verify solutions Verify solutions iv. Describe, extend, create and predict number and linear patterns. Interpret and analyse graphs representing linear relationships including interpolation and extrapolation ii. iii. Plot linear equations and non-rule based data on a Cartesian plane, with or without technologies ii. Solve linear equations using algebraic and graphical techniques, strategies including guess and check, and verifying solutions by substitution iii. February 2012 Page 1 of 3 Find the distance between two points on a Cartesian plane using a range of strategies, with or without technologies ii. Use graphs to solve equations involving: simple non-linear relations linear graphs using the coordinates of two points iii. • • Solve, with or without technologies, problems involving: line of best fit linear equations including simple algebraic fractions and those derived from formulas • linear inequalities, including graphing solutions on a number line • linear simultaneous solutions • simple quadratic equations • • Use graphs and equations to analyse and illustrate relations involving: • parallel and perpendicular lines • simple quadratics • circles • exponentials In Year 7, students: FDPR 7 i. In Year 9, students: In Year 10, students: FDPR 8 FDPR 9 FDPR 10 i. i. i. • Using fractions, decimals, percentages, ratios and rates Using spatial reasoning Numeracy Solve problems involving: finding a common denominator in operations with a range of fractions, including those with unrelated denominators and mixed numbers • finding percentages of quantities • expressing one quantity as a fraction or percentage of another • converting between equivalent representations of percentages, fractions and decimals, e.g. 20% is equivalent to 1 and 0.2 In Year 8, students: Solve problems using: percentage increases and decreases, e.g. population growth • terminating and recurring decimals, choosing the appropriate representation • rates and ratios using fractions and percentages • Identify relationships between graphs and equations corresponding to simple rate problems Use graphs and equations to analyse and illustrate proportional relationships 5 • • simple ratios rounding decimals to a specified number of decimal places SR 7 SR 8 SR 9 i. Draw different views of prisms and solids using combinations of prisms and analyse their positions in the environment i. Identify properties for congruence of triangles and confirm congruence using transformations i Use the properties of similarity and ratio to solve problems involving enlargement and transformation i. Use congruence, similarity and angle properties to solve problems involving plane shapes ii. Classify triangles according to their side and angle properties and describe quadrilaterals ii. Identify properties of quadrilaterals using congruent triangles and angle properties, e.g. side lengths, parallelism, angles, diagonals and symmetry ii. Identify the relationship between the corresponding sides of similar right-angled triangles ii. Solve problems involving right-angled triangles, e.g. angles of elevation and depression, and direction iii. Prove that the sum of the angles of a triangle is 180° and make connections to the sum of the angles of a quadrilateral iv. Identify angle relationships when two straight lines are crossed by a transversal, e.g. corresponding, alternate and co-interior angles iii. Create and interpret complex spatial information from maps and grids iii. Use the relationship between areas of similar figures and the ratio of the corresponding sides to solve problems v. Plot tables of values or ordered pairs, and find values for a point on a Cartesian plane iv. Apply trigonometry and Pythagoras’ Theorem to solve problems involving right-angled triangles vi. Identify line and rotational symmetries. Describe translations, reflections in an axis, and rotations of multiples of 90° on a Cartesian plane using coordinates Years 7–10 Numeracy Indicators Australian Curriculum v.3 SR 10 Queensland Studies Authority August 2012 Page 2 of 3 Interpreting and drawing conclusions from statistical information Numeracy In Year 7, students: In Year 8, students: In Year 9, students: In Year 10, students: SI 7 SI 8 SI 9 SI 10 i. Construct sample spaces for single-step experiments with equally likely outcomes i. Identify complementary events (the sum of all probabilities for an event will equal 1) and use sum of probabilities to solve problems i. List all outcomes of two-step chance experiments, both with and without replacement using tree diagrams or arrays, and determine probabilities for events i. Use the language of probability, e.g. if … then, given, of, knowing that, to investigate conditional statements. Identify common mistakes in interpreting such language and describe the concept of independence ii. Assign probabilities to the outcomes of events. Explain the difference between empirical data (everyday experimental probability) and theoretical (expected) probability ii. Describe events using numerical representations and use language: • at least • exclusive (A or B but not both) • inclusive (A or B or both) • and (both A and B) ii. Calculate relative frequencies to estimate probabilities of events involving “and” or “or” statements ii. Describe the results of two- and three-step chance experiments, both with and without replacements, assign probabilities to outcomes and determine probabilities of events iii. Represent and interpret chance events in two-way tables and Venn diagrams iii. Identify issues involving numerical data from both primary and secondary sources, e.g. reliability, variation, sample size iv. Analyse the practicalities and implications of obtaining data through sampling using a variety of investigative processes iii. Identify everyday questions and issues involving at least one numerical and at least one categorical variable. Identify techniques for collecting primary data for specific purposes, including census and sampling iii. Identify questions and issues involving a number of variables, and interpret data from secondary sources iv. Collect, represent and summarise sets of data and calculate mean, median and range. Identify the mode v. Describe the effect of individual data values, including outliers, on measures of central tendency (mean, median, mode) iv. Collect data directly from secondary sources, including reports of surveys in digital media. Estimate means and medians from data iv. Analyse techniques for collecting data, including census, sampling and observation, to evaluate the effectiveness of collection strategies and identify refinements v. Construct and compare a range of data displays including stem-and-leaf plots and dot plots vi. Interpret a range of data displays including tables, histograms, sector graphs, divided bar graphs and time series v. Construct data displays including back-to-back stem-and-leaf plots and histograms. Make comparisons using terms including “skewed”, “symmetric” and “bimodal” v. vi. Describe and interpret data displays using mean, median and range. Analyse and interpret different types of data, including grouped data vi. Compare data displays using measures of central tendency and range. Review sample sizes and the reliability of the data vi. Using measurement M7 M8 Describe trends in: numerical data where the independent variable is time box plots to compare data sets scatter plots to comment on relationships between two continuous variables • graphs and equations to illustrate proportional relationships • 5 number summaries to numerically and visually compare the centre and spread of data sets • • • Evaluate statistical reports by linking claims to displays, statistics and representative data M9 M 10 i. Evaluate the reasonableness of an estimate by comparing to known measurement units i. Convert volume or area units to another, e.g. cm2 → mm2. Choose measuring instruments and methods based on the level of accuracy required Students continue to apply knowledge of units measurements from previous year levels Students continue to apply knowledge of units of measurements from previous year levels ii. Calculate the area of rectangles, triangles and parallelograms and the volume of rectangular prisms, using established formulas and appropriate units of measure ii. Identify the relationship between features of circles, e.g. circumference, area, radius and diameter. Use formulas to find circumference and area i. Calculate the areas of composite shapes, the surface area and volume of cylinders and right prisms i. Calculate the surface area and volume for spheres, a range of prisms and composite solids, e.g. pyramids, cones and cylinders iii. Find perimeters and areas of parallelograms, trapeziums, rhombuses and kites. Use formulas to find the volume of triangular and other prisms iv. Use 12- and 24-hour time to solve problems within a single time zone ii. Use 12- and 24-hour time to solve problems across time zones ii. Use very small and large time scales and intervals to solve problems iii. Create schedules for authentic situations, estimating duration of events and including transition periods Years 7–10 Numeracy Indicators Australian Curriculum v.3 Queensland Studies Authority August 2012 Page 3 of 3