BBC Teach released a series of nine films that support the physical, social and health education (PSHE) curriculum in schools.
The short clips are shown in classrooms to pupils aged between nine and 12 are used to explore controversial topics such as sex and body image.
In one video, titled Identity – Understanding Sexual and Gender Identities, a young boy asks: ‘What are the different gender identities?’
The teacher on screen, Kate Daniels, then says: ‘We know that we have got male and female but there are over 100, if not more, gender identities now.’
Ms Daniels then goes on to explain that some people are ‘bi-gender’ and so feel as though they are two genders at once, as well as that some people are ‘gender-queer’ and ‘don’t want to be anything in particular’.
It is feared that the advice that there are more than ‘100 genders’ will cause confusion as increasingly more children are seeking to change their gender identity.
Between 2017 and 2018, 2,519 young people were referred to the gender development service at the Tavistock and Portman NHS Foundation Trust in London.