Aussie Maths Invaders: Grades 1-9 PC/Mac Win95 2000. If your kids would rather eat brussel sprouts than learn their tables and number facts, Aussie Maths Invaders will take the dread out of their homework time. If they enjoy their maths, they'll love Aussie Maths Invaders. The game is simple. Players repel waves of descending tables and number fact questions by answering them quickly and correctly. Speed, difficulty, and the type of question can be easily adjusted for any child. Aussie Maths Invaders can't help with the brussel sprouts, but imagine your kids looking forward to homework time! GRADES 1-9 Junior Activities Counting • Adding • Subtracting Middle Primary Activities Adding • Subtracting • Multiplying • Dividing Fractions • Decimals • Roman Numerals • Tables Upper Primary Activities Highest Common Factors (HCF) Lowest Common Multiples (LCM) Upper Primary/Junior High Activities Simple Equations • Powers • Squares Square Roots • Directed Numbers Advanced Activities Bases • Binary • Octal • Hexadecimal Br155