Ratios – 5.01a

About the lecture

In this mini-lecture, we cover Topic 5.01a by introducing ratios. As we move through this mini-lecture, we consider: (i) common ratios such as 1 : 1 and 1 : 2 in ratio notation; (ii) ratios in everyday scenarios: diluting squash with water, determining the cost per item in a store; (iii) how to simplify ratios by multiplying or dividing both sides by the same factor; and (iv) how to simplify ratios using the highest common factor (HCF).

About the lecturer

Thomas Woolley is a Mathematical Biologist and Senior Lecturer in the School of Mathematics at Cardiff University. His research focuses on modelling biological systems in order to understand how certain biological phenomena occur. Currently, he is working on understanding muscle stem cell protrusions known as blebs. Blebs allow cells to move along muscle fibres in order to find and heal damage, and Dr Woolley is interested in gaining insights into how this motion occurs. Alongside his research, Dr Woolley is passionate about outreach and has contributed to a variety of projects, including appearances on Numberphile and BBC Radio Wales – Science Cafe. He also contributed to the creation of Mathematics: The Winton Gallery at the London Science Museum.