This interactive document teaches about synonyms through a game where the player helps Marvin Monkey navigate the jungle by choosing the correct synonym at each intersection. It provides examples of synonyms and has the player practice identifying synonyms to help Marvin reach the banana tree. When the player selects incorrectly, it reminds them that synonyms are words that mean the same thing. Upon choosing all the synonyms correctly, it congratulates the player on their knowledge of synonyms.