Pre-teaching social and academic vocabulary
Pre-teaching is a planned scaffold in which the teacher introduces a small, carefully selected set of high-leverage words and phrases, both everyday "social" language and discipline-specific "academic" language, before an emergent bilingual student encounters them in the main lesson, text, or task. The goal is to give students an entry point so they begin the lesson already familiar with the language they will need, rather than processing new content and new vocabulary at the same time. It is most powerful when it activates and connects to what students already know, including cognates and concepts they hold in their home language, so it builds on existing linguistic resources. As proficiency grows, the number of pre-taught words shrinks and students increasingly infer meaning from context independently.
When to use it
Use pre-teaching before any lesson, text, or task that carries a manageable number of unfamiliar words that are essential to comprehension or to expressing understanding, especially Tier 2 academic words and Tier 3 content terms that cannot be shown quickly with a picture or gesture and that are not transparent cognates. It is appropriate when the conceptual load is high (new science or math content, a complex narrative, a multi-step task) and when the lesson's success depends on students understanding specific terms. It is less necessary, and should be faded, when words are easily demonstrable in the moment, are cognates students can already leverage, or when the student has reached a proficiency level where inferring meaning from rich context is itself the learning target. Pre-teaching should support access to grade-level content, not replace it or simplify it below grade-level expectations.
How to implement it
- 1Select 5 to 8 high-leverage words per lesson. Prioritize words that are essential to the central concept, that will recur across the unit or other content areas (Tier 2), or that are discipline-specific (Tier 3), and that cannot simply be acted out or shown quickly during the lesson.
- 2Check for cognates and home-language anchors first. For Spanish speakers, flag transparent cognates (observe/observar, energy/energía) so students recognize what they already know, and invite students to name or show the concept in their home language before the English label is introduced.
- 3Write student-friendly explanations rather than dictionary definitions, pairing each word with a visual, a gesture, a realia object, or a short example sentence in a meaningful context.
- 4Plan multiple, brief exposures. Introduce the words, then have students hear, say, see, and use each word in a low-stakes way (matching, sorting, a sentence frame, a quick partner exchange) so the words become usable, not just recognized.
- 5Connect each word to the upcoming lesson explicitly: tell students where they will meet it and what it will help them do, so the pre-teaching has a clear purpose.
- 6Provide and post a visual word bank, anchor chart, or bilingual reference students can return to during the lesson, and keep it available for output and review.
- 7Fade deliberately over time: reduce the number of pre-taught words, shift from giving definitions to having students predict or infer meaning, and move toward teaching word-learning strategies (morphology, context clues, cognate awareness) so students grow toward independence.
Why it works for emergent bilingual students
Pre-teaching makes lesson input more comprehensible and can lower the affective filter: by front-loading the language, the new content arrives at a level the learner can process, which Krashen argues is the condition necessary for acquisition (Krashen, 1982). It is asset-based when it is built on what students already bring, especially cross-linguistic transfer. Spanish and other Romance-language speakers carry a large reservoir of academic cognates, and surfacing those during pre-teaching converts existing home-language knowledge into immediate English access. Pre-teaching also addresses the distinction Cummins draws between conversational language and the academic language that develops over several years (Cummins, 2008): it gives emergent bilinguals deliberate, scaffolded access to the academic register of a discipline so they can engage with grade-level thinking now, while their broader proficiency continues to grow. Framed this way, the support is a temporary bridge that leverages and extends students' bilingual repertoire, not a remediation for a deficit.
Across proficiency levels
Pre-Production
Most intensive and most concrete. Pre-teach a very small set of essential words using realia, images, gestures, and total physical response, and pair each English label with the home-language equivalent or a student's own representation. Students show understanding non-verbally (point, match, draw, sort) and are not required to produce the word orally yet. Heavy use of cognates and visuals; expect a long wait time.
Beginning
Still substantial. Pre-teach a small set of high-leverage words with visuals, student-friendly explanations, and cognate connections, then have students use the words in highly supported output such as one- or two-word answers, labeling, and copying or completing sentence frames. Bilingual word banks and picture supports remain in place during the lesson.
Intermediate
Begin to fade. Pre-teach fewer words and shift toward having students predict meanings from context, sort words into categories, and use new terms in short original sentences with optional frames. Introduce explicit word-learning strategies (cognate awareness, common prefixes and suffixes, context clues) so students start inferring rather than only receiving meaning. As students move into the High Intermediate level (a distinct level under the 2026 Texas ELPS), continue fading and lean more on these strategies, reserving pre-teaching for genuinely dense or abstract terms.
High Intermediate / Advanced
Light and strategic. At the Advanced level (the highest 2026 Texas ELPS level), pre-teach only the few dense or abstract Tier 2 and Tier 3 terms that even strong readers could not infer, and focus on nuance, connotation, register, and academic collocations. Emphasize independent strategies (morphological analysis, using context and cognates) so the scaffold is largely self-directed and the student meets grade-level expectations without routine front-loading.
Examples
- •Before a science lesson on the water cycle, the teacher pre-teaches evaporate, condense, and precipitation using a labeled diagram and a simple demonstration, highlighting the Spanish cognates evaporar, condensar, and precipitación so Spanish speakers immediately connect to what they know.
- •Before reading a short story, a teacher introduces five key words with student-friendly explanations and images on a slide, then students match each word to a picture and use it in a sentence frame ('The character felt ___ because ___') before opening the text.
- •In a math lesson, the teacher pre-teaches estimate and reasonable with concrete examples and a sentence stem, posts them on an anchor chart with icons, and refers back to the chart each time the words appear in word problems.
- •For a Pre-Production newcomer, the teacher pre-teaches three lab-safety words (goggles, careful, hot) with real objects and gestures and asks the student to point to each item, requiring no spoken English yet.
- •For an Advanced student, the teacher previews only two abstract terms (inevitable, ambiguous) from an essay, focusing on connotation and how each is used in academic writing, and lets the student infer the remaining vocabulary from context.
Research basis
Pre-teaching key content and vocabulary gives emergent bilinguals familiarity and a foundation to build on before a new lesson, so they are not starting from scratch; teachers identify a limited set of key concepts and words and support them with visuals, realia, and multimedia.
Colorín Colorado. (n.d.). Pre-teaching content and vocabulary. WETA Public Broadcasting. https://www.colorincolorado.org/teaching-ells/ell-classroom-strategy-library/pre-teaching-content-and-vocabulary [link]
Building background by explicitly teaching and emphasizing key academic vocabulary, and linking new concepts to students' prior knowledge and experiences, is a core component of effective sheltered instruction for English learners.
Echevarria, J., Vogt, M. E., & Short, D. J. (2017). Making content comprehensible for English learners: The SIOP model (5th ed.). Pearson.
Robust, intentional vocabulary instruction should focus on a manageable set of high-utility (Tier 2) words taught through student-friendly explanations and repeated, meaningful encounters, which strengthens both word knowledge and reading comprehension.
Beck, I. L., McKeown, M. G., & Kucan, L. (2013). Bringing words to life: Robust vocabulary instruction (2nd ed.). Guilford Press.
Vocabulary knowledge is a strong determinant of reading comprehension and academic achievement for second-language learners, making deliberate vocabulary support especially consequential for this population.
August, D., & Shanahan, T. (Eds.). (2006). Developing literacy in second-language learners: Report of the National Literacy Panel on Language-Minority Children and Youth. Lawrence Erlbaum Associates.
Academic language proficiency (CALP) develops over several years and differs from conversational fluency (BICS), so emergent bilinguals benefit from deliberate scaffolding that gives them access to the academic register of disciplines.
Cummins, J. (2008). BICS and CALP: Empirical and theoretical status of the distinction. In B. V. Street & N. H. Hornberger (Eds.), Encyclopedia of language and education (2nd ed., Vol. 2, pp. 71–83). Springer. https://doi.org/10.1007/978-0-387-30424-3_36 [link]
Learners acquire language when they receive comprehensible input slightly beyond their current level (i+1) and when their affective filter is low, which supports front-loading and scaffolding language so new content is understandable.
Krashen, S. D. (1982). Principles and practice in second language acquisition. Pergamon Press.
Sources reviewed by an independent second-language-acquisition specialist and an adversarial citation audit.
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