P31 Probability - And and Or rules

ALL 281 Lessons for £20. Get them in one power point.
My name is Billy, a maths teachers working in the North West of the UK. I have created 281 lesson presentations that cover the complete KS3 and KS4 Maths course including all new topics for the new 9-1 GCSE spec. All lessons introduce each topic with examples that are all fully annotated. At the end of each presentation there are summary questions with answers attached. All lessons are on power point and are designed to be used at the front of a classroom. They are screen shot so are not editable. However, if you purchase the entire pack (281 lessons) please contact me and I will get an editable version to you on promethean.
Topics include
Number: 62 lessons
Algebra: 81 lessons
Geometry and Measure: 65 lessons
Ratio and Proportion: 33 lessons
Probability and Statistics: 40 lessons

Prices:
• 20 lessons are free (4 from each of the above topics)
• All number lessons can be purchased together for £10. They have been placed in a very large single power point presentation. This is the same for all topics eg, Algebra will cost £10 for all lessons.
• The entire package, all 281 lessons can be purchased for £20.
• A (H) indicates that it is on the higher GCSE only
Probability & Statistics
P1 Discrete and Continuous Data
P2 Introducing Averages and Range
P3 Tally Charts and Bar Charts (Discrete)
P4 Histograms and Frequency Polygons (Continuous)
P5 Dual Bar Charts
P6 Composite Bar Charts
P7 Vertical Line Graphs
P8 Time Series Graphs
P9 Pictograms
P10 Pie Charts…Drawing
P11 Pie Charts…Interpret
P12 Introducing Scattergraphs
P13 Scattergraphs - Line of Best Fit
P14 Introducing Sampling Methods
P15 Stratified Sampling
P16 Stem and Leaf Diagram
P17 Averages And Range Problem Solve
P18 Averages From A Frequency Table
P19 Averages From A Grouped Frequency Table
P20 Using Averages To Compare Data
P21 Introducing Probability
P22 Probability Scale
P23 Probability and Listing Outcomes
P24 Probability - Sample Space Diagrams
P25 Probability Of An Event Not Happening
P26 Relative Frequency and Experimental Probability

P27 Two-Way Tables
P28 Venn Diagrams – Introduction
P29 Venn Diagrams – Terminology
P30 Frequency Tree’s
P31 Probability - “And” and “Or” rules
P32 Probability Tree Diagrams - Independent Events
P33 Probability Tree Diagrams – Conditional
P34 (H) Interquartile Range
P35 (H) Cumulative Frequency
P36 (H) Boxplots
P37 (H) Comparing Data - Boxplots and CF Graphs
P38 (H) Capture – Recapture
P39 (H) Histograms – Drawing
P40 (H) Histograms - Interpreting