1. Plan for content and English together

English learners develop English while learning science, mathematics, and other subjects. Before introducing a new unit, activate relevant knowledge with an object, image, demonstration, or brief conversation. Select the words students need for the central idea and revisit them across several days in meaningful reading, discussion, and writing instead of assigning a disconnected vocabulary list. Prior knowledge gives new language a meaning to attach to; memorizing terms alone does not ensure comprehension.

2. Link vocabulary, discussion, reading, and writing

The IES elementary guide recommends intensive vocabulary instruction, development of academic English, and regular opportunities to read and write. In a science lesson on evaporation, students can observe water, connect the word to what changes, rehearse an explanation with a partner, then record the observation using a word bank or sentence starter. The oral rehearsal prepares ideas for writing, while the written response lets the teacher see whether the concept and language are taking shape.

3. Scaffold without lowering the idea

Use diagrams, labeled examples, sentence frames, and partner talk to make demanding content accessible. Offer more than one way to show understanding, such as labeling a process before writing about it, but keep the underlying question intellectually worthwhile. Remove a scaffold when students can do that part independently; leaving a frame in place indefinitely can limit rather than extend language use. Invite students’ existing language resources and experiences into the discussion when they help explain the concept.

4. WWC expert-panel perspective: Use the updated WWC guide and keep its scope in view

The cited WWC guide Effective Literacy and English Language Instruction for English Learners in the Elementary Grades is a 2007 guide for grades K–5; the WWC page says it was updated by a 2014 guide. The successor, Teaching Academic Content and Literacy to English Learners in Elementary and Middle School, covers elementary and middle grades. The vocabulary and integrated oral/written-language examples below translate that successor guide into classroom practice; they do not promise identical effects at every grade or proficiency level.

5. What the National Academies report covers

The 2017 National Academies consensus report Promoting the Educational Success of Children and Youth Learning English: Promising Futures reviews research relevant to dual-language learners and English learners from birth through age 21. It discusses language development across home and school contexts; it is not a single-intervention study estimating the effect of a specific lesson routine. Using prior knowledge and home-language resources in class is an instructional application of that context, and outcomes still need to be checked with local student evidence.

Sources: WWC | Effective Literacy and English Language Instruction for English Learners in the Elementary Grades · Promoting the Educational Success of Children and Youth Learning English: Promising Futures (National Academies)