Mathematics - 9260 OxfordAQA

Mensuration And Calculation

Übersicht

This is the topic where knowing which formula to recall is worth as much as using it. There is no formulae sheet in any 9260 paper: the front cover lists a calculator and mathematical instruments and nothing else. Appendix 6.1 of the specification names the formulae you must carry in your head, and several of them live here: the circumference and area of a circle, Pythagoras, the three trigonometric ratios, the sine rule, the cosine rule, the area of a triangle as half ab sin C, the area of a trapezium and the volume of a prism.

You will use standard units of measure and change freely between them, including the compound units of speed and density; apply formulae for the area of triangles, parallelograms and trapezia and for the volume of a solid with a constant cross sectional area; work with the circumference and area of a circle and with composite shapes; and use Pythagoras and the trigonometric ratios in right-angled triangles in two-dimensional figures. On the Extension Tier you add surface area and volume of spheres, pyramids, cones, composite solids and frustums, the relationships between lengths, areas and volumes in similar figures, arc lengths and sectors, trigonometry in three dimensional figures, and the sine and cosine rules.

Ziele

  1. [Core] use standard units of measure and related concepts (length, area, volume/capacity, mass, time, money etc); change freely between related standard units (eg time, length, area, volume/capacity, mass) and compound units (eg speed and density) (Notes: 24 and 12 hour clock for times)
  2. [Core] know and apply formulae to calculate: area of triangles, parallelograms, trapezia; volume of 3D shapes using V = Ah where A is the constant cross sectional area and h is the height/length
  3. [Core] know and use the formulae: circumference of a circle = 2πr = πd; area of a circle = πr²
  4. [Core] calculate perimeters and areas of 2D shapes, including composite shapes
  5. [Extension] surface area and volume of spheres, pyramids, cones and composite solids including composite shapes and frustums of pyramids and cones (Notes: solutions in terms of π may be asked for)
  6. [Extension] use the relationships between lengths, areas and volumes in similar figures
  7. [Extension] calculate arc lengths, angles and areas of sectors of circles
  8. [Core] know the formula for: Pythagoras' theorem, a² + b² = c², and the trigonometric ratios sin θ = opposite/hypotenuse, cos θ = adjacent/hypotenuse and tan θ = opposite/adjacent
  9. [Core] apply them to find lengths and angles in right-angled triangles in two-dimensional figures
  10. [Extension] including 3D figures
  11. [Extension] know and apply the sine rule, a/sin A = b/sin B = c/sin C, and cosine rule, a² = b² + c² − 2bc cos A, to find unknown lengths and angles
  12. [Extension] know and apply Area = ½ ab sin C to calculate the area, sides or angles of any triangle

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Lernkarten

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Lektionshinweis

Start with the single most consequential fact about this topic. There is no formulae sheet. Appendix 6.1 of the specification opens with the sentence Students are expected to know the formulae below, which will not normally be given in the exam, and it closes with Other formula will be given in the examination in the question for which they are needed. So the list divides the whole subject in two, and knowing which side a formula falls on tells you exactly what to memorise.

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Unterrichtsbewertung

Herzlichen Glückwunsch zum Abschluss der Lektion über Mensuration And Calculation. Jetzt, da Sie die wichtigsten Konzepte und Ideen erkundet haben,

Sie werden auf eine Mischung verschiedener Fragetypen stoßen, darunter Multiple-Choice-Fragen, Kurzantwortfragen und Aufsatzfragen. Jede Frage ist sorgfältig ausgearbeitet, um verschiedene Aspekte Ihres Wissens und Ihrer kritischen Denkfähigkeiten zu bewerten.

Nutzen Sie diesen Bewertungsteil als Gelegenheit, Ihr Verständnis des Themas zu festigen und Bereiche zu identifizieren, in denen Sie möglicherweise zusätzlichen Lernbedarf haben.

  1. How many square centimetres are there in one square metre? A. 100 B. 1000 C. 10 000 D. 1 000 000 Answer: C
  2. A right-angled triangle has a hypotenuse of 73 cm and one other side of 48 cm. What is the third side? A. 25 cm B. 55 cm C. 61 cm D. 87 cm Answer: B
  3. Two similar solids have corresponding lengths 10 cm and 12 cm. The smaller has volume 500 cm^3. What is the volume of the larger? A. 600 cm^3 B. 720 cm^3 C. 864 cm^3 D. 1000 cm^3 Answer: C
  4. Which formula will NOT be printed on a 9260 question paper when it is needed? A. The volume of a cone B. The volume of a sphere C. The area of a circle D. The curved surface area of a cone Answer: C
  5. A triangle has sides 16 cm, 9 cm and 20 cm. Which rule finds the angle opposite the 20 cm side? A. Pythagoras B. The sine rule C. The cosine rule D. Half ab sin C Answer: C

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Empfohlene Bücher

OxfordAQA International GCSE Mathematics Core (9260)
OxfordAQA International GCSE Mathematics Core (9260)
Untertitel: Student Book
Verleger: Oxford University Press
Jahr: 2016
ISBN: 978-0-19-837586-9
Beschreibung: The endorsed student book for the Core Tier of the 9260 specification, written for first teaching in September 2016. 520 pages covering every Core content statement with graded practice and worked model answers.
OxfordAQA International GCSE Mathematics Extension (9260)
OxfordAQA International GCSE Mathematics Extension (9260)
Untertitel: Student Book
Verleger: Oxford University Press
Jahr: 2016
ISBN: 978-0-19-837587-6
Beschreibung: The endorsed student book for the Extension Tier. 560 pages: it carries the whole Core content plus every Extension statement, so it is the one book to own if you are entered for Papers 1E and 2E.
Alex's Adventures in Numberland
Alex's Adventures in Numberland
Untertitel: Dispatches from the Wonderful World of Mathematics
Verleger: Bloomsbury
Jahr: 2011
ISBN: 978-1-4088-0959-4
Beschreibung: Where the mathematics on this specification came from and what it is for: counting systems, the golden ratio, probability paradoxes and the people who argued about them. Read it for the reason behind the rule.

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