Volume 2: Data Handling:
These exemplary presentations are ideal tools for those teaching GCSE Mathematics.  They cover all the theory for Data Handling and, in addition, provide worked examples, summaries and introductory exercises to test students’ understanding - with solutions.  Whilst aimed principally at whole class teaching, they can be used by individual students or small groups to help them when they have missed work or when they are revising.

There are 30 files.  Where possible, real data has been used so that students see the relevance of the topics to everyday life.  Text, diagrams and examples are animated to explain and enliven the work and teachers can control the speed at which the presentations run and pause whenever they wish.  From time to time, the presentations ask students to share ideas so that they gain confidence.

• The materials are designed for whole class teaching of GCSE Mathematics: Data Handling, for teaching specifications starting in 2007. 
• There are 30 files.  An additional file, named Contents, gives the titles of the other files and indicates the tier, Foundation or Higher.  Higher tier students should revise all the topics.
• The materials work best if the students sit in pairs, as they can then be involved as the theory is developed, by sharing ideas with their partners.
• The slides indicate with clipart images when it is useful to take notes, use a calculator to check a calculation, or do an exercise.
• The graphs in the presentation have been imported from the software Autograph.  Use of Autograph “live” to investigate ideas in greater depth or to aid understanding is very valuable and the presentations can be paused at any point to do this.  (See http://www.chartwellyorke.co.uk  for purchasing details and special offers).
• Whilst the materials are designed for use by teachers, they can be made available on intranets so that students can have access if they have missed work or wish to review work. A site licence is required for this.
  
  The files have been labelled as follows:

         F:      Basic work for the Foundation tier.
         H:      Topics which appear only in the Higher tier content.

Most of the foundation tier content, as given in the GCSE Mathematics specifications, is repeated for the higher tier.  Even where this not so, the nature of the subject is such that exam questions at the higher tier could well include ideas and material from the foundation level.  So, in writing the presentations, it has been assumed that all students taking the higher papers will study and revise all the foundation material.  

The Contents file is the key to easy access to the presentations.  The titles have been hyperlinked to the files and colour has been used to group topics.
For example, work on probability occurs at both tiers and the file titles are coloured blue in the contents.

Since students sometimes experience difficulty handling fractions, many of the probability examples are worked using fractions and answers are cancelled to their lowest form.

Clip art images are used as follows:

Students should check the result on a calculator.

A summary of the key points in a form suitable for note taking.

Exercises that do not require a calculator.  Some involve arithmetic that gives practice for non-calculator papers.

Exercises where a calculator is useful or essential.

Animations will not work correctly unless Powerpoint 2002, or later, is used.