A YouTube channel of maths instructional videos, mostly aimed at school level, organised into dozens of topic playlists such as "Financial Math", "Differentiation Applications", "Ratios and Proportions", and "Systems of Equations and Inequalities". The videos can also be browsed through a database
Video and Audio Lectures in Maths for Economists
More than sixty short films explaining mathematical concepts by putting them in a real-world context, hosted by Ken Heather of the University of Portsmouth. Each video combines a live-action explanation of the idea followed by a numerical example which is worked through on-screen. Each film can be downloaded in low resolution or high-resolution Windows Media format, or viewed in YouTube. The animations can be viewed separately as Flash files that play in a web browser. The five categories are 1) Mathematical review, 2) Linear equations, 3) Mathematics of finance and growth, 4) Linear programming, and 5) Differentiation and integration.
Many dozens of short tutorial videos on mathematical topics, especially calculus and algebra. Each lasts a few minutes and gives audio narration while you see the instructor's hand writing. The videos can be watched for free on YouTube.
A free archive of short broadcasts on Radio 4 in which Harford and guests critically examine statistics that are in the news, whether political, scientific, or sometimes whimsical. Questions have included "Is population density the right measure to be looking at when working out how many refugees countries should take?" "Why don’t all the opinion polls give the same results?" and "Is it true that Greece failed to collect 89% of taxes in 2010?"
Among the interviewees are Nobel laureates Angus Deaton and Al Roth. Episodes can be listened to online, and in podcasting software it is possible to subscribe and automatically download new episodes.