The Mathematical CPD Library https://validator.w3.org/feed/docs/rss2.html Home News Working with graphs of trigonometric functions Working with graphs of trigonometric functions Using trigonometric identities Working with trigonometric identities Using the discriminant Using the discriminant Standard Deviation Standard Deviation Pythagoras’ Theorem & Trigonometry M13 Pythagoras’ Theorem M13 Trigonometry Higher Vectors Higher Vectors Foundation Vectors Foundation Vectors Finding the Area & Circumference of Circles M10 Finding the Area & Circumference of Circles Area of Triangles M17 Area of Triangles Area of Trapezia (Trapeziums) Area of Trapeziums Tangents of Circles Lesson Surface Area & Volume M12 Surface Area & Volume Sine Rule M15 Sine Rule Cosine Rule Sectors M11 Arc Lengths Types of Number Roman Numerals Lesson Primes, Factors & Composite Numbers Lesson 6N9: Use estimation to check answers to calculations and determine, in the context of a problem, an appropriate degree of accuracy 6N9 Lesson 6N8: Solve problems involving addition, subtraction, multiplication and division 6N8 Lesson 6N7: Solve addition and subtraction multi-step problems in contexts, deciding which operations and methods to use and why 6N7 Lesson 6N6: Use their knowledge of the order of operations to carry out calculations involving the 4 operations 6N6 Lesson 6N5: Identify common factors, common multiples and prime numbers 6N5 Lesson 6N4: Perform mental calculations, including with mixed operations and large numbers 6N4 Lesson 6N3: Divide numbers up to 4 digits by a two-digit number using the formal written method of short division where appropriate, interpreting remainders according to the context