Believe it or not only two numbers are needed to locate your exact position on Earth - your longitude and latitude! People and places -Mapping - Latitude and longitude Learning Points Longitude: imaginary lines that run vertically around the Earth. Latitude: imaginary lines that run horizontally around the Earth. 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.