R26 Direct and Inverse Proportion Problem Solve

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

Ratio and Proportrion
R1: Converting Metric Units…Length
R2: Converting Metric Units…Mass
R3: Converting Metric Units…Capacity
R4a: Fraction of an Amount
R4b: Fraction of an Amount – Reverse
R5: Percentages…Expressing as a percentage
R6: Percentage Change
R7: Percentage of an Amount
R8: Percentage Increase/Decrease Non Calc
R9a: Percentage Increase Decrease
Using Calc
R9b: Percentage Increase Decrease Using Single Multipliers with Calc
R10: Percentages - Simple Interest
R11: Percentages…Compound Interest/Growth & Decay
R12: Reverse Percentages
R13: Ratio: Simplifying
R14 Ratio: Writing in the form 1:N
R15a - Ratio Sharing an Amount
R15b - Ratio Sharing-More Than One Ratio
R16 - Ratio: Maps and Scales
R17 - Recipe Style Questions
R18 - Value for Money
R19 - Exchanging Money
R20 Compound Measures-Speed Non Calc
R21 Compound Measures-Speed Calc
R22 Speed - Converting km/h to m/s
R23 Speed - Time Distance Graphs
R24 Compound Measures-Density
R25 Compound Measures-Pressure
R26 Direct and Inverse Proportion
Problem Solve
R27 Direct and Inverse Proportion
Graphs
R28 Direct and Inverse Proportion
Formula
R29 Compound Measures - Population Density