This post contains spoilers for the end of Avengers: Infinity War.

# Elwyn Berlekamp has left us

In memory of Elwyn Berlekamp, who passed away on 9th April, Colin Wright has shared with us this post from his blog. I remember meeting Elwyn Berlekamp.

# Mathematical Objects: Pythagoras T-shirt

A conversation about mathematics inspired by a t-shirt featuring Pythagoras’ theorem. Presented by Katie Steckles and Peter Rowlett. Podcast: Play in new window | Download Subscribe: Android | Google Podcasts | RSS

# Mathematical Sign Language – Interview with Dr Jess Boland

We spotted award-winning physicist Jess Boland sharing YouTube clips of mathematical terms in sign language on her Twitter account – and instantly wanted to learn more. We asked her about herself, the videos, and her interest in mathematical and scientific sign language.

# Matt Parker does BBC GCSE maths revision videos

Stand-up mathematician and friend of the site Matt Parker has produced a set of videos for teacher resource site BBC Teach, aimed at GCSE maths students.

# Carnival of Mathematics 168

The next issue of the Carnival of Mathematics, rounding up blog posts from the month of March, is now online at Math Off The Grid. The Carnival rounds up maths blog posts from all over the internet, including some from our own Aperiodical. See our Carnival of Mathematics page for more information.

# Scientists call for an end to statistical significance

A group of over 800 scientists have signed their names to an article published in Nature, explaining why statistical significance shouldn’t be relied on so heavily as a measure of the success of an experiment. We asked statistics buff Andrew Steele to explain.