The CD has our new ‘self-tutoring’ software. For every worked
example in this book, a student can listen to a teacher’s voice explain
each step in the worked example – ‘click’ anywhere in the
worked example where you see the
icon.
NB: Sample chapters do not have working links.
This is a thorough revision of our established course for students in Year 9. The content is presented in 24 short chapters, in full colour.
The book caters for a range of student abilities. It contains many problems, graded from basic to advanced. Some exercises are designed to build skills, others contextualise the problem so that students can see the practical, everyday applications of the mathematics they are studying.
Most chapters begin with an Opening Problem to show the application of the
mathematics that will be studied in the chapter. Definitions and rules are
highlighted and worked examples (with
) give
step-by-step, easy-to-follow instructions. Investigations are included to help
students develop problem-solving skills and discover mathematical concepts for
themselves.
| 1 | PYTHAGORAS | 11 | |
| A | Square roots | 13 | |
| B | Solving equations of the form x2 = k | 14 | |
| C | The theorem of Pythagoras | 16 | |
| D | The converse of the Pythagorean theorem | 22 | |
| E | Pythagorean triples | 23 | |
| F | Problem solving using Pythagoras | 25 | |
| G | Three dimensional problems (Extension) | 29 | |
| Review Set 1A | 29 | ||
| Review Set 1B | 30 | ||
| 2 | NUMBER | 31 | |
| A | Natural numbers | 32 | |
| B | Divisibility tests | 34 | |
| C | Integers and order of operations | 36 | |
| D | Rational numbers (fractions) | 41 | |
| E | Decimal numbers | 46 | |
| F | Ratio | 49 | |
| G | Prime numbers and index notation | 53 | |
| Review set 2A | 57 | ||
| Review set 2B | 57 | ||
| 3 | ALGEBRAIC OPERATIONS | 59 | |
| A | Product notation (Review) | 61 | |
| B | The language of mathematics | 63 | |
| C | Changing words to symbols | 64 | |
| D | Evaluation | 68 | |
| E | Collecting like terms | 71 | |
| F | Product and quotient simplification | 73 | |
| Review set 3A | 75 | ||
| Review set 3B | 75 | ||
| Challenge set 1 | 76 | ||
| 4 | PERCENTAGE | 77 | |
| A | Percentage | 78 | |
| B | The unitary method in percentage | 82 | |
| C | Finding a percentage of a quantity | 84 | |
| D | Percentage increase and decrease | 85 | |
| E | Percentage change using a multiplier | 88 | |
| F | Simple interest | 93 | |
| G | Compound interest | 97 | |
| Review set 4A | 101 | ||
| Review set 4B | 102 | ||
| 5 | ALGEBRAIC EXPANSION | 103 | |
| A | The distributive law | 104 | |
| B | The expansion of (a+b)(c+d) | 109 | |
| C | The expansion rules | 111 | |
| D | Expansion of surdic expressions | 117 | |
| Review set 5A | 120 | ||
| Review set 5B | 120 | ||
| 6 | LENGTH AND AREA | 121 | |
| A | Lengths and perimeters | 122 | |
| B | Area | 130 | |
| C | Surface area | 139 | |
| D | Problem solving | 145 | |
| E | Areas and perimeters (Extension) | 147 | |
| Review set 6A | 149 | ||
| Review set 6B | 150 | ||
| 7 | INDICES | 151 | |
| A | Algebraic products and quotients with numbers to a power | 152 | |
| B | Index laws | 154 | |
| C | Expansion laws | 156 | |
| D | Zero and negative indices | 158 | |
| E | Standard form (Scientific notation) | 161 | |
| F | Significant figures | 164 | |
| Review set 7A | 165 | ||
| Review set 7B | 166 | ||
| 8 | INTERPRETING AND DRAWING GRAPHS | 167 | |
| A | Interpreting graphs and charts | 168 | |
| B | Travel graphs | 173 | |
| C | Using technology to graph data | 178 | |
| Review set 8A | 180 | ||
| Review set 8B | 181 | ||
| 9 | VOLUME AND CAPACITY | 183 | |
| A | Volume | 184 | |
| B | Capacity | 191 | |
| C | Problem solving | 195 | |
| Review set 9A | 197 | ||
| Review set 9B | 198 | ||
| 10 | SOLVING EQUATIONS | 199 | |
| A | Solution by inspection or trial and error | 201 | |
| B | Maintaining balance | 202 | |
| C | Building expressions and isolating the unknown | 204 | |
| D | Formal solution of linear equations | 207 | |
| E | Equations with a repeated unknown | 210 | |
| F | Fractional equations | 212 | |
| G | Unknown in the denominator | 215 | |
| Review set 10A | 217 | ||
| Review set 10B | 218 | ||
| 11 | COORDINATE GEOMETRY | 219 | |
| A | Plotting points (Review) | 222 | |
| B | Linear relationships | 223 | |
| C | Plotting linear graphs | 226 | |
| D | The equation of a line | 228 | |
| E | The slope (gradient) of lines | 229 | |
| F | Graphing lines from equations | 234 | |
| G | Other line forms | 236 | |
| H | Finding rules from graphs | 240 | |
| Review set 11A | 242 | ||
| Review set 11B | 243 | ||
| 12 | ALGEBRA | 245 | |
| A | Converting into algebraic form | 246 | |
| B | Forming equations | 248 | |
| C | Problem solving using linear equations | 250 | |
| D | Finding an unknown from a formula | 253 | |
| E | Linear inequalities | 255 | |
| F | Solving linear inequalities | 257 | |
| Review set 12A | 262 | ||
| Review set 12B | 262 | ||
| 13 | SIMULTANEOUS EQUATIONS | 265 | |
| A | The point of intersection of linear graphs | 267 | |
| B | Simultaneous equations | 268 | |
| C | Rearranging linear equations | 271 | |
| D | Problem solving with technology | 272 | |
| Review set 13A | 274 | ||
| Review set 13B | 274 | ||
| 14 | CHANCE INVESTIGATIONS | 275 | |
| A | Probability by experiment | 278 | |
| B | Probabilities from tabled data | 279 | |
| C | Chance investigations | 281 | |
| D | Sample space | 285 | |
| E | Further simulation | 287 | |
| Review set 14 | 288 | ||
| 15 | CONGRUENCE AND SIMILARITY | 289 | |
| A | Congruence of figures | 290 | |
| B | Constructing and drawing triangles | 291 | |
| C | Congruent triangles | 293 | |
| D | Similarity | 301 | |
| Review set 15A | 305 | ||
| Review set 15B | 306 | ||
| 16 | ALGEBRAIC FACTORISATION | 309 | |
| A | Common factors | 310 | |
| B | Factorising with common factors | 312 | |
| C | Difference of two squares factorising | 316 | |
| D | Perfect square factorisation | 317 | |
| E | Factorising expressions with four terms | 320 | |
| F | Factorising quadratic trinomials | 321 | |
| G | Miscellaneous factorisation | 323 | |
| Review set 16A | 326 | ||
| Review set 16B | 326 | ||
| 17 | COMPARING CATEGORICAL DATA | 327 | |
| A | Review of categorical data | 330 | |
| B | Examining categorical data | 335 | |
| C | Comparing and reporting categorical data | 339 | |
| D | Data collection and misleading graphs | 341 | |
| Review set 17A | 346 | ||
| Review set 17B | 347 | ||
| 18 | THE GEOMETRY OF POLYGONS | 349 | |
| A | Review of geometrical facts | 351 | |
| B | Triangles | 357 | |
| C | Isosceles triangles | 360 | |
| D | Quadrilaterals and other polygons | 363 | |
| E | Deductive geometry | 366 | |
| F | Special quadrilaterals | 369 | |
| Review set 18A | 372 | ||
| Review set 18B | 373 | ||
| 19 | QUANTITATIVE STATISTICS | 375 | |
| A | Quantitative data | 377 | |
| B | Grouped discrete data | 381 | |
| C | Measuring the centre | 383 | |
| D | Comparing and reporting discrete data | 391 | |
| Review set 19A | 394 | ||
| Review set 19B | 395 | ||
| 20 | PROBABILITY | 397 | |
| A | Theoretical probability | 398 | |
| B | Using grids to find probabilities | 401 | |
| C | Multiplying probabilities | 403 | |
| D | Using tree diagrams | 405 | |
| E | Sampling with and without replacement | 408 | |
| F | Expectation | 410 | |
| G | Odds | 412 | |
| Review set 20A | 413 | ||
| Review set 20B | 414 | ||
| 21 | QUADRATIC EQUATIONS | 415 | |
| A | Quadratic equations | 416 | |
| B | Problem solving with quadratics | 419 | |
| C | Graphs of quadratic functions | 422 | |
| Review set 21A | 425 | ||
| Review set 21B | 426 | ||
| 22 | TRANSFORMATION GEOMETRY | 427 | |
| A | Translations | 430 | |
| B | Rotations | 432 | |
| C | Reflections | 437 | |
| D | Enlargements and reductions | 442 | |
| E | Tessellations | 447 | |
| Review set 22A | 451 | ||
| Review set 22B | 452 | ||
| 23 | ALGEBRAIC FRACTIONS | 453 | |
| A | Simplifying algebraic fractions (Review) | 454 | |
| B | Adding and subtracting algebraic fractions | 456 | |
| C | Multiplying and dividing algebraic fractions | 459 | |
| D | Further simplification | 461 | |
| Review set 23A | 467 | ||
| Review set 23B | 467 | ||
| 24 | TRIGONOMETRY | 469 | |
| A | Using scale diagrams in geometry | 470 | |
| B | Trigonometry | 471 | |
| C | The trigonometric ratios | 476 | |
| D | Problem solving with trigonometry | 480 | |
| Review set 24A | 484 | ||
| Review set 24B | 485 | ||
| ANSWERS | 487 | ||
| INDEX | 523 | ||
This 6 edition is a thorough revision of our established course in mathematics for Year 9 students. The content of this new edition is presented in 24 short chapters, in full colour.
A feature of the 6th edition is our new
software
on the accompanying CD: click anywhere in any worked example to activate a
teacher’s voice which will explain each step in the worked example. The
SELF TUTOR is intended as a help for students who have been absent from classes
or for those who need extra revision and practice.
The CD offers exciting possibilities for students and teachers. In addition
to the
, it contains links to spreadsheets, graphing and geometry
software, calculator instructions, computer demonstrations and simulations.
Teachers will be able to demonstrate concepts quickly, clearly and simply, and
students have the opportunity to revisit the demonstrations and experiment for
themselves. (See the note ‘Using the interactive CD’ on the page
immediately after this Foreword.)
The book contains many problems from the basic to the advanced, to cater for a range of student abilities and interests. While some of the exercises are designed simply to build skills, every effort has been made to contextualise problems so that students can see everyday uses and practical applications of the mathematics they are studying. Extension problems are marked with red numbers.
An Opening Problem appears at the start of most chapters to offer an insight into the application of the mathematics that will be studied in the chapter. Definitions and rules are highlighted and worked examples provide step-by-step, easy-to-follow instructions. Exercises within each chapter are carefully graded and Investigations are included to assist students to develop their problem solving skills, discover mathematical concepts for themselves and appreciate the applications of mathematics.
We hope the combination of textbook and interactive CD will foster the mathematical education of students in a stimulating way. In this changing world of mathematics education, we believe that the contextual approach adopted in this book, with the associated use of technology, will enhance students’ understanding, knowledge and appreciation of mathematics, and its universal application.
The interactive CD is ideal for independent study.
Students can revisit concepts taught in class and undertake their own revision and practice. The CD also has the text of the book, allowing students to leave the textbook at school and keep the CD at home.
By clicking on the relevant icon, a range of new interactive features can be
accessed:
Graphics calculators: instructions for using Texas Instruments and Casio calculators graphics calculators are also given on the CD and can be printed. Click on the relevant icon (TI or C) to access printable instructions.
Examples in the textbook are not always given for both types of calculator. Where that occurs, click on the relevant icon to access the instructions for the other type of calculator.
SELF TUTOR is a new exciting feature of this book. The
icon on each worked example denotes an active link on the CD.
Simply ‘click’ on the
(or
anywhere in the example box) to access the worked example, with a
teacher’s voice explaining each step necessary to reach the answer.
Play any line as often as you like. See how the basic processes come alive using movement and colour on the screen.
Ideal for students who have missed lessons or need extra help.