Explore the places in which people live. How can cities keep growing larger and larger? People and places -Human geography - Settlements Learning Points The number of people living in a settlement is called its population. As settlements grow, people move outside of the centre into the suburbs. A Twig Curriculum Film. Delivering key learning points. Get straight to the facts in just three minutes – directly linked to core learning, Twig's curriculum films will fit neatly into your lesson plans.