The former Prime Minister and his wife were on the show to promote their new charity designed to make Maths less intimidating, named The Richmond Project.
The current model requires students who fail these two core subjects at GCSE level to resit them repeatedly until they achieve a least a grade 4 in both subjects, up to the age of 18.
Maths Professor Hannah Fry has turned heatwave explainer in recent weeks, sharing videos with her fans on Instagram. In her latest, she tackles the 'dirty hairdryer' heat on the Tube.
Mark Holland made a string of inappropriate comments including calling a student a 'dumb blonde' and telling a female pupil she 'could do better' in reference to her boyfriend.