Frontloading and preteaching key vocabulary are critical for ELL students! These strategies provide the prior knowledge and background information they need to be successful with all content. This post has an awesome video with examples of frontloading vocabulary.
I really enjoyed this code of frontloading for English Language Learners. This follows a preschool teacher who teaches many ELL students. She focused a lot on using props and visuals to teach vocabulary in the beginning of the lesson so that she can have students get a better grasp of the concept and vocabulary. It is definitely worth the watch!