ACTIVATION OF PRIOR KNOWLEDGE
Stimulate the pupils brain for a certain topic to show them pictures
You can build up an activity after showing them pictures. The next step is for example to match words to the pictures. You can extend this with sentences.
Create a wordweb or wordcloud to activate the pupil's prior knowlegde.
Synonyms will let the pupils actively be busy in their search for the right words. It will extent their vocabulary.