In this episode Mrs Corbett calculate how much she is really doing, spoiler, its more than her husband, and she tries to teach him about work done and energy transfer

In this episode, Mrs Corbett see what is left over as she tries to teach her husband about resultant forces

In this episode, Mrs Corbett really feels the weight of her actions, or the mass, or the gravitational force, as she tries to teach her husband about gravity

In this episode Mrs Corbett trusts her feels and deals in absolutes as she tries to teach her husband about Forces

In this episode, Mrs Corbett creates something completely new as a one off as she tries to teach her husband to reduce, reuse and recycle.