In this month’s Wrong, But Useful, Dave and Colin discuss: Colin gets his plug for Cracking Mathematics in early Colin is upset by a missing apostrophe Dave teases us with the number of the podcast and asks about the kinds of things it’s reasonable to expect students to know, and asserts that the origin of the seven-day week is a quarter of the moon’s cycle. Is that right? So, 28 is the number of the podcast, although the sidereal month is 27.3 days. We point out Big MathsJam conference, which (this year) is the weekend of the 12th-13th of November […]