Most of South America lies within the tropics ... Give pupils an outline map of the continent and ask them to draw and write features inside that they think they might find there.
If you are looking at a traditional world map, you won't get an accurate ... you will likely learn there are seven continents: North America, South America, Europe, Africa, Asia, Oceania/Australia ...
South America is a facinating continent, etched with history and culture, with many places speaking Spanish due to European colonisation. These include Argentina, Bolivia, Chile, Colombia ...