Muffins with different types of filling were used to represent gender

A challenge used to teach young people about gender has been criticised for suggesting to teenagers that they may be transgender if they do not fit designated categories of pink or blue.

The “mixed-muffin gender berry challenge” is one of a number of exercises included in Agenda, a free online toolkit distributed to more than 1,400 young people across Wales.

Its author, Emma Renold, professor of childhood studies at Cardiff University, has received a £10,000 award for her work, including the Agenda guide, which aims to teach young people about healthy relationships and raise awareness of sexual violence and discrimination.

Critics have warned that the toolkit’s guide to transgender identity does more harm than good.

The exercise distributes muffins around a group. Those whose cakes