Learning the letter sounds

Every week we learn a new letter sound.  So far we have learnt the letter sounds a, t  and  s.  Last Friday we made some yummy toast.  Can you guess which letter sound we were learning?  This week we are learning the letter sound for i  and we have learnt that there are 2 sounds - a short sound for i ( as in  is ) and a long sound ( as in like).  What do you think we might make for the letter sound i ?