ESOL students benefit from easy access to sight words and seeing vocabulary words in many places. Referring to these reference tools and placing them in areas that students have access to are ways to increase their use.
Word wall where students can take words with them
In my classroom I have a magnetic word wall. Sometimes, when students ask for help finding words I will take down two or three words and have them identify the word they are looking for. Then they have the word at eye level to copy. I have a magnetic chalkboard. I used sports tape to separate the letters.
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When I travel to other classrooms, or work with students that need fewer words to choose from I use a portable word wall. This is made from three file folders glued together. Each word it attached with velcro.
Illustrated Vocabulary Words
Lower level ELLs benefit from having labels up around the classroom. This is also beneficial for all students that are at the beginning stages of reading and writing. You can quickly make labels yourself using sentence strips, index or sticky notes. For a more colorful version I have made illustrated classroom labels and labels for book categories.