‘Standards units in statistics’ is designed to transform the teaching, training and learning of mathematics in secondary schools. It is made up of teaching and learning resources – based on statistics – which include lesson plans, activities and links to useful computer programs. The units focus on selected topics. The plans and activities were developed with teachers and trainers and are based on successful practice.

## Unit S1: Ordering probabilities

These activities for secondary mathematics lessons enable pupils to use probability vocabulary such as 'certain', 'impossible', 'likely', and to understand that probabilities are assigned values in the range zero to one. The activities are part of the 'Standards units in statistics’ within ‘Teaching statistics’.

## Unit S2: Evaluating probability statements

These activities for secondary mathematics lessons help pupils to discuss and clarify some common misconceptions about probability, including the concepts of equally likely outcomes, randomness and sample sizes. The activities are part of the 'Standards units in statistics’ within ‘Teaching statistics’.

## Unit S3: Using probability computer games

These activities for secondary mathematics lessons enable pupils to overcome common misconceptions about probability, use diagrams to count equally likely outcomes and calculate probabilities of dependent and independent events. The activities are part of the 'Standards units in statistics’ within ‘Teaching statistics’.

## Unit S4: Understanding mean, median, mode and range

These activities for secondary mathematics lessons help pupils to understand mean, median, mode and range while exploring the relationships between these measures and their relationship to the shape of a distribution. The activities are part of the 'Standards units in statistics’ within ‘Teaching statistics’.

## Unit S5: Interpreting bar charts, pie charts, box and whisker plots

These activities for secondary mathematics lessons help pupils to understand and interpret bar charts, pie charts and box and whisker plots. The activities are part of the 'Standards units in statistics’ within ‘Teaching statistics’.

## Unit S6: Interpreting frequency graphs, cumulative frequency graphs, box and whisker plots

These activities for secondary mathematics lessons help pupils to interpret frequency graphs, cumulative frequency graphs and box and whisker plots for large samples. The activities are part of the 'Standards units in statistics’ within ‘Teaching statistics’.

## Unit S7: Developing an exam question – Probability

These activities for secondary mathematics lessons help pupils to use past examination questions creatively, understand and use estimates of probability from theoretical models, and list all outcomes for two successive events. The activities are part of the 'Standards units in statistics’ within ‘Teaching statistics’.

## Unit S8: Using binomial probabilities

These activities for secondary mathematics lessons enable pupils to calculate binomial probabilities and develop their understanding of the context in which it is appropriate to use binomial probabilities. The activities are part of the 'Standards units in statistics’ within ‘Teaching statistics’.