Vocabulary Building Needs?

My Home Class Data is above, although we cross group for Reading. 

I have looked at the STAR data as well as my own observations of both my group teaching and one on one reading time with my students, and see Vocabulary as being a key gap to support students in their learning. 

I have noticed that depending on the subject matter, genre and text type, the children's understanding of the vocabulary in their texts at their regular reading level can really fall down. 

At our staff meeting after school yesterday, Mrs Nua recommended some school holiday reading of Dr Jannie Van Hees book "What Every Primary School Teacher Should Know About Vocabulary". So I am hoping to draw some inspiration from these pages, for a clearer direction moving forward in Term 2.