Use of cognates
Cognates are words that share similar spelling, meaning, and often pronunciation across two languages because of a shared linguistic origin (for example, English "family" and Spanish "familia," or "celebrate" and "celebrar"). This support treats the student's home language as a knowledge base by explicitly drawing attention to these shared words, so learners can map new English vocabulary onto words they already own. An estimated 30 to 40 percent of common English words have a Spanish cognate, and the overlap is even denser in academic and content-area vocabulary, which makes cognate awareness a high-leverage scaffold. It is a temporary instructional bridge: students are taught how to notice and use cognates and gradually internalize the strategy so they apply it independently.
When to use it
Most powerful for emergent bilinguals whose home language shares cognates with English (Spanish, Portuguese, French, Italian, and other Romance or Latin- and Greek-rooted languages), especially during vocabulary introduction, content-area reading (science, social studies, mathematics), and pre-reading of academic texts. Use it when a lesson contains key terms with transparent cognates, when students encounter dense academic vocabulary, and when you want learners to draw on their full linguistic repertoire rather than starting from zero. It offers less leverage for languages that share few cognates with English and for everyday high-frequency words that rarely have cognates. Always pair cognate work with explicit attention to false cognates, or "false friends" (for example, Spanish "embarazada" means pregnant, not embarrassed; "librería" means bookstore, not library), so students learn to verify meaning rather than assume it.
How to implement it
- 1Identify the cognates in upcoming texts and lessons ahead of time, and build a running, student-generated cognate wall or chart (for example, a 'Nuestros cognados / Our cognates' anchor chart) that grows across units.
- 2Explicitly teach what a cognate is, model the noticing habit with a think-aloud, and show students how a familiar home-language word can unlock the meaning of an unfamiliar English word.
- 3Front-load key cognates before reading: preview the term in English, invite students to name the home-language equivalent, and confirm the shared meaning together.
- 4Teach cognate patterns and shared Greek and Latin roots (for example, -tion/-ción, -ty/-dad, -ous/-oso) so students can generalize beyond memorized pairs and predict new cognates on their own.
- 5Have students flag cognates during reading with sticky notes or highlighting, then verify meaning in context, distinguishing true cognates from false cognates.
- 6Use partner and sorting routines (cognate card matches, sorting true versus false cognates) so students articulate the strategy aloud and consolidate it.
- 7Gradually release responsibility: move from teacher-flagged cognates to student-identified cognates, then fade the scaffold as students transfer the strategy to new texts independently.
Why it works for emergent bilingual students
Cognate work is fundamentally asset-based: it positions the student's home language as a resource that provides a genuine head start in English rather than a gap to overcome. It draws on Cummins's principle of linguistic interdependence, in which conceptual and linguistic knowledge developed in the first language transfers to and supports second-language reading and academic learning (Cummins, 1979). By making cross-linguistic connections visible, cognate instruction builds metalinguistic awareness, helps students experience competence and confidence (which, in Krashen's terms, can lower the affective filter), and accelerates academic vocabulary growth, a strong predictor of reading comprehension for emergent bilinguals (Carlo et al., 2004). It also reflects a translanguaging stance, inviting students to draw on their whole linguistic repertoire as a single, integrated system rather than two separate languages kept apart.
Across proficiency levels
Pre-Production
Heavily scaffolded and concrete. The teacher pre-selects a small set of high-transparency cognates (family/familia, animal/animal, color/color), pairs each with an image, and says both forms aloud so students hear and see the match. Students respond non-verbally (pointing, matching a picture to a word, nodding) and are encouraged to use the home-language word freely. The goal is recognition and a felt sense of 'I already know this,' not independent identification.
Beginning
The teacher still pre-flags cognates but invites students to supply the home-language equivalent orally or in writing and to confirm meaning with a partner. Cognates are introduced before reading and added to a shared chart. Students begin to highlight teacher-identified cognates in short texts. Visuals and home-language confirmation remain available as supports.
Intermediate
The scaffold shifts toward student-driven noticing. Students hunt for cognates in grade-level texts, log them, and begin learning common cognate patterns and roots to predict meanings. The teacher introduces false cognates explicitly and has students verify meaning in context rather than assuming it. The chart becomes a student-maintained reference, and teacher flagging is reduced.
High Intermediate / Advanced
For High Intermediate and Advanced students the support is largely faded into an internalized strategy. Students independently use cognates, morphological patterns, and shared roots to infer the meaning of unfamiliar academic and technical vocabulary, evaluate true versus false cognates critically, and discuss register and nuance differences between a cognate pair (for example, 'assist' and Spanish 'asistir,' which means to attend). The teacher provides cognate scaffolds only for unusually dense or specialized texts, treating cognate analysis as a sophisticated comprehension and word-learning tool rather than a daily support.
Examples
- •Science unit on the water cycle: before reading, the teacher previews evaporation/evaporación, condensation/condensación, precipitation/precipitación, and circulation/circulación, and students recognize that they already understand most of the key terms through their Spanish cognates.
- •An 'Our Cognates' anchor chart that students add to throughout the year with sticky notes whenever they spot a true cognate in their reading, then read aloud to the class.
- •Cognate card sort in partners: students match English cards to Spanish cards (history/historia, important/importante, problem/problema) and place suspected false friends (library/librería, embarrassed/embarazada) in a separate 'tricky words' pile to discuss.
- •Pattern mini-lesson: the teacher shows the -tion to -ción pattern (nation/nación, education/educación, attention/atención) so students can predict new cognates independently when they meet other -tion words.
- •Independent reading with a High Intermediate student who encounters 'beneficial,' connects it to 'beneficioso,' confirms the meaning fits the sentence, keeps reading without teacher support, and notes the slight difference in formality between the two words.
Research basis
Explicit instruction that teaches students to use cognates, along with morphology, multiple meanings, and context, to infer word meaning produced greater growth in vocabulary knowledge and reading comprehension for Spanish-speaking emergent bilinguals than typical instruction.
Carlo, M. S., August, D., McLaughlin, B., Snow, C. E., Dressler, C., Lippman, D. N., Lively, T. J., & White, C. E. (2004). Closing the gap: Addressing the vocabulary needs of English-language learners in bilingual and mainstream classrooms. Reading Research Quarterly, 39(2), 188-215. https://doi.org/10.1598/RRQ.39.2.3 [link]
Bilingual students can be explicitly taught to use Spanish-English cognates as a strategy to improve their spelling, writing, and reading, leveraging their bilingualism as a literacy asset.
García, G. E., Sacco, L. J., & Guerrero-Arias, B. E. (2020). Cognate instruction and bilingual students' improved literacy performance. The Reading Teacher, 73(5), 617-625. https://doi.org/10.1002/trtr.1884 [link]
Conceptual and linguistic knowledge developed in a student's first language transfers to and supports second-language academic development (the principle of linguistic interdependence), providing a theoretical basis for cross-linguistic supports such as cognate instruction.
Cummins, J. (1979). Linguistic interdependence and the educational development of bilingual children. Review of Educational Research, 49(2), 222-251. https://doi.org/10.3102/00346543049002222 [link]
Because an estimated 30 to 40 percent of words in English have a related word in Spanish, building students' cognate awareness gives Spanish-speaking learners a usable tool for understanding English vocabulary and text.
Colorín Colorado. (n.d.). Using cognates with ELLs. WETA Public Broadcasting. Retrieved June 16, 2026, from https://www.colorincolorado.org/using-cognates-ells [link]
The revised Texas English Language Proficiency Standards establish a five-level proficiency framework (Pre-Production, Beginning, Intermediate, High Intermediate, and Advanced); the standards became effective February 2, 2025, with classroom implementation beginning in 2026-2027, requiring supports to be differentiated across these five levels.
Texas Education Agency. (2025). English language proficiency standards (19 Texas Administrative Code Chapter 120, Subchapter B). https://tea.texas.gov/curriculum-and-instruction/english-language-proficiency-standards [link]
Sources reviewed by an independent second-language-acquisition specialist and an adversarial citation audit.
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