How to recognize and use vocabulary items?

First of all, remember that working memory has a capacity of four chunks in young adults and fewer in children and old adults and that we always have to take our learners emotions, tiredness, way of perception into consideration because each student is unique. 

To teach family members to 9 year-old students I've used flashcards, tape, chalk and the board. Firstly, I presented the family members to my students. I introduced the words: grandfather, grandmother, mother and father saying: "This is (Lucy)'s (grandfather)."

Then, I asked my students to close their eyes and I took out one of the members. After asking them to open their eyes I said: "Is (Lucy)'s (grandfather) missing?" Students answered "yes" o "no" to my question. 

Finally, I repeated the action above but this time I  asked: "Who's missing?" Students answered: "(Mary)'s (grandfather). 
When first exposed to vocabulary, students establish new neural connections. Upon hearing the same words on a second occasion, students recognize those words. They now recall the words which will be reproduced later.