OCR GCSE Stage 9

Checking answers

Algebraic manipulation

 D.O.T.S. (select D.O.T.S. at top)

Proportion and variation

 Direct and inverse proportion

Indices

 *Indices 1 - Multiplying
 *Indices 2 - Dividing
 *Indices 3 - Powers of powers
 Laws of Indices

Rearranging Formulae

 *Changing the subject 3 - subject appears twice

Arcs, sectors and volumes

 *Circles - Sector Areas and Arc Lengths
 Sectors, Arcs, Segments
 Volumes of pyramids, cones and spheres

Upper and lower bounds

 *Upper and Lower Bounds 1
 *Upper and Lower Bounds 2 - calculations
 Limits of Accuracy

Similarity and enlargement

 *Similar triangles 1
 *Similarity - Distances
 *Similarity - Areas
 Similar triangles

Probability

 *Probability tree diagrams 1
 *Probability tree diagrams 2
 Probability tree diagrams

Two and three dimensions

 *Lengths and angles inside cuboids
 Problems in 3D

Histograms

 *Histograms 1 - Drawing Histograms
 *Histograms 2 - Interpreting Histograms
 *Histograms - A Common Type of Question
 Histograms

Circle properties

 *Circles and Isosceles Triangles    
 Cyclic Quadrilaterals      
 The Angle in a Semicircle...    
 *The Angle at the Centre ...
 Angles in the Same Segment      
 2 Theorems about Tangents and Circles
 *The Alternate Segment Theorem
 Cyclic Quadrilaterals ... Proof
 Angle at the Centre ... Proof
 Circle Theorems
 Circle Theorems - proof

Straight line graphs

 *Straight Line Graphs 1 - Gradients
 *Straight Line Graphs 2 - Equations 1
 *Straight Line Graphs 3 - Equations 2
*Parallel and perpendicular lines 1
*Parallel and perpendicular lines 2
 Straight Line Graphs
 Linear Graphs

Surveys and sampling