Trinity - Maths (Topic Index)

Mathematics

Number

Counter: An interactive counter to help with writing numbers and understanding place value.
CounterAttack!: A game to help with reading numbers.
Directed Number Aritmetic: Adding and subtracting negative numbers. E.g. 5 + -2 = 3.
Directed Number Aritmetic 2: Multiplying and dividing negative numbers. E.g. 5 × -2 = -10.
Directed Numbers - Puzzle Tables: Find the missing numbers.
Estimating Using 1 Significant Figure: Estimating the answers to calculations by rounding each number to 1sf.
Equivalent Questions: Finding the missing number to give the same answers. E.g. 12 + 23 = 18 + ? or 12 × 4 = ? × 8.
Equivalent Questions 2: Finding the missing number to give the same answers. Harder questions.
Fractions

Fraction Arithmetic: Addition and Subtraction.
Fractions & Decimals: Converting between fractions and decimals without a calculator.
Fraction Match!: A game pairing equivalent fractions.
Fraction Decimal Match!: A game matching fractions with decimals.
Fraction Percentage Match!: A game matching fractions with percentages.
Fraction Decimal Percentage Match!: A game matching fractions, decimals and percentages.
Simplifying Fractions: Write fractions in their simplest form.

Highest Common Factors: Find the HCF of two numbers.
Mathaxians: A game to help learn times tables.
Multiplication Tables: Random questions.
Multiplication Tables Match Up: Matching game.
Multiplication Tables Loop Cards: Create and print a set of cards.
Percentages

Percentage Decimal Match!: A game matching fractions with decimals.
Percentages 1: Find 10%, 20%, 30% of numbers.
Percentages 2: Find 5%, 10%, 15%, 20% of numbers.
Percentages 3: Find 5%, 10%, ..., 95% of numbers.
Percentages 4: Find 5%, 10%, ..., 195% of numbers.
Percentages 5: Find 1% to 200% of numbers.
Percentage Change: Random question table on percentage change, including reverse percentages.
Percentages and Percentage Change: Random questions. Choosing the right method.
Repeated Percentage Change: Random questions on repeated percentage change.
Reverse Percentages: Random questions on finding original values.

Powers of 10: Multiplying and dividing by 10, 100, 0.1, 0.01 etc.
Recipes: Proportion questions.
Ratio - Dividing: Dividing money in a given ratio.
Scale: An interactive scale to help with scale reading and linear sequences.
Standard Form: Writing numbers in standard form. E.g. 2.867 × 10⁶.
Standard Form (Whole Number Bases): Writing numbers in standard form. E.g. 3 × 10⁴.
Standard Form Match Up: Match numbers with their equivalents in standard form.
Standard Form Products: Multiplying numbers in standard form.
Standard Form Quotients: Dividing numbers in standard form.
Surds: Simplifying single surds.
Surds 2: Simplifying surds with more than one term.
What Do I Add or Subtract?: E.g. What do I add to 11 to get 5?

Algebra

Completing the Square 1: Completing the square for quadratics x² + bx +c where b is even.
Completing the Square 2: Completing the square for quadratics ax² + bx +c where a = 1 to 3 and is a common factor.
Completing the Square 3: Completing the square for quadratics ax² + bx +c where a = -4 to 4 and is a common factor.
Coordinate Game: Find the secret point.
Cubic Trial & Improvement: Solving cubic equations using trial and improvement.
Expanding double brackets: E.g. (x + 2)(x - 5).
Expanding double brackets Loop Cards: Generate and print loop cards.
Expanding double brackets 2: E.g. (3x + 2)(7x - 5).
Expanding double brackets Match-Up: Interactive matching game.
Expanding & factorising single brackets: E.g. 2(c + 3) = 2c + 6.
Factorising quadratics 1: Randomly generated factorising questions.
Factorising quadratics 2: As above but slightly harder.
Factorising quadratics 3: E.G. Factorising to give (3x + 2)(7x - 5).
Gradient: The gradient between two points.
Graph types: Recognising different types of graph.
Indices: An introduction to the laws of indices.
Indices 2: Further notes on indices, including positive and negative fractional indices.
Indices questions: Easier questions on basic powers.
Match-Up: Expressions: Interactive matching game with simplified and unsimplified expressions.
Linear equations 1: Simple linear equations. E.g. 3x = 12 , x - 2 = 7 , x/3 = 2 , 3x + 2 = 17.
Linear equations 2: Linear equations with brackets on one side. E.g. 2(x + 5) = 12.
Linear equations 3: With variable on both sides. E.g. 2x - 3 = x + 7.
nth terms: nth terms of linear sequences an+b where a is positive or negative.
nth term Match-Up: Match nth terms with sequences against the clock.
nth terms of Quadratics: Find the terms or find the rule for the nth term.
Proportion: Randomly generated questions on direct and inverse proportion.
Quadratic equations: Solving various types. E.g. x²+3x+2=0. E.g. (x-3)(x+5)=33.
Quadratic roots: Finding their nature using the descriminant.
Simultaneous equations: Randomly generated mixed difficulty questions.
Tables of values: Creating tables of values for quadratic and cubic graphs.

Shape & Measure

Bounds: Upper and lower bounds of measurements.
Circle theorems: An interactive teaching tool to help investigate circle theorems.
Match-Up: Angle Names: Interactive matching game to learn names of angles.
Match-Up: Polygons: Interactive matching game to learn how many sides each polygon has.
Pythagoras: Finding the distance between two points.
Radians: Converting between radians and degrees.
Trigonometry: Finding sides and angles in right-angled triangles.

Data & Probability

Statistics S1 index: Full index of resources for the AS-Level Statistics course.

Discrete & continuous data: Examples of different types of data.
Finding the Mean: Currently of two numbers. Will be expanded soon.
Estimating the mean from a grouped frequency table: Random questions with answers.
The Intersection of two sets: Some examples to show how the intersection of two sets restricts what is shaded on a Venn diagram.
Probability trees: Test your understanding of probability trees.
Scatter graphs & correlation: An interactive teaching tool for AS-Level statistics.
The Union of two sets: Some examples to show how the union of two sets extends what is shaded on a Venn diagram.
Venn diagrams: A simple animation showing examples of sets shaded on a Venn diagram.

Core 3

Differentiation: Practising the chain rule.