Using Percentages to Increase Quantities N7
In this resource from the DfE Standards Unit, students make links between percentages, decimals and fractions, represent percentage increase and decrease as multiplication and recognise the inverse relationship between increases and decreases. Most students will have met these concepts before, however, many will have been introduced to the ideas in a procedural manner (“this is how you calculate a percentage of a quantity”) rather than in a conceptual one. Gaps and misconceptions will remain. Typically, for example, we find that learners believe an increase of 50% followed by a decrease in 50% takes us back to the original value. This session will confront such misconceptions and build new conceptual links between percentages, decimals and fractions. (GCSE grades D-G)
Show health and safety information
Please be aware that resources have been published on the website in the form that they were originally supplied. This means that procedures reflect general practice and standards applicable at the time resources were produced and cannot be assumed to be acceptable today. Website users are fully responsible for ensuring that any activity, including practical work, which they carry out is in accordance with current regulations related to health and safety and that an appropriate risk assessment has been carried out.