The location of the River Clyde is shown on a map of the Central Lowlands of Scotland. The river is followed from its source to the sea. The Clyde is about 170km in length and drops 600m on its journey to the sea. The last part of the river is navigable and is famous for a spectacular set of waterfalls, the Falls of Clyde. The terms 'source' and 'upstream' are explained.
Children could watch the clip and be asked to try and remember what the new vocabulary 'source' and 'upstream' mean. As a class, the River Clyde from source to sea could be plotted and other new terminology discussed and used by the children. This could then be repeated with another river with the expectation that the children continue to try and used the new terminology they have been taught.