Supporting English Language Learners in Practical Lab Skills (Science & Health, Grades 6–12)

An English language learner in a middle or high school science lab is rarely struggling with the science. They are struggling with a procedure written in the imperative, a set of verbs that appear nowhere else in their day, and a safety instruction they must understand instantly. Lowering the content is the wrong response. This is how to scaffold the language of practical work — sentence frames, visual supports and staged vocabulary — so the investigation stays at grade level.

Separate the three kinds of language in a lab

Lab language does three different jobs, and each needs a different scaffold. Procedural language tells students what to do: measure, decant, invert, secure. Descriptive language reports what happened: the solution turned cloudy, effervescence occurred, the mass decreased. Analytical language explains and argues: this suggests, which indicates, because the independent variable was.

Most support stops at the first category, and that is why students who follow the method perfectly still hand in an empty conclusion. Plan for all three from the start of the unit, and be honest about which one a given task is really assessing. If the point of today is the analysis, do not let procedural vocabulary be the barrier — give the method with images and let them spend their effort on the reasoning.

Scaffolds that carry weight, not scaffolds that decorate

1. The picture method. Rewrite the procedure as numbered photographs or line drawings with a four-word caption each. Students can follow it before they can read it, and the images stay usable when the same equipment appears later in the year.
2. The verb wall. Fifteen procedural verbs, each with a small image and a mimed action taught on day one. Point to it during instruction rather than explaining again. Include the near-pairs that cause accidents: pour and pipette, heat and boil, add and add slowly.
3. Observation frames. "When I added ___ to ___, the ___ changed from ___ to ___." A frame like this produces a scientifically usable sentence from a student with limited English, and it teaches the noun-verb structure they will need unaided later.
4. Analysis frames with connectives. "The results show ___. This suggests ___ because ___." Print them on the tables. Withdraw them deliberately over the term rather than leaving them out forever.
5. Bilingual key term list. Ten terms per unit, with the home-language equivalent where students can supply it. Students who have studied the concept in another language do not need to relearn it, only to relabel it.

The frames and connectives are general academic language, not science-specific, which is why building them with your ELA colleagues pays off; the writing scaffolds and sentence-level work in the Comprehensive English Language Arts Curriculum: Build Skills, Ignite Creativity give a shared structure both departments can reference so students meet one system instead of two.

Stage the vocabulary across the practical, not before it

Front-loading twenty words on a Monday does not work. Stage them instead. Introduce procedural verbs immediately before the equipment appears, in context, with the action performed. Introduce descriptive terms during the observation itself, when the referent is on the bench. Save analytical terms for the write-up, when students already know what they want to say and only need the words to say it.

Physical apparatus makes this easier, because the meaning is visible: a topic where students can point at the thing they are describing lets language and concept develop together. Practical mechanics is ideal for this, and the diagrams and structured investigations in Levers & Pulleys – Physics Resource for Middle School (Grades 7–10) put a labeled object in front of students while the vocabulary is still new.

Assessing science, not English

Decide before you grade what the task is measuring. If it is the biology, accept a labeled diagram, a spoken explanation recorded at the bench, or a paragraph with frame language visible. If the writing itself is the target, say so and grade it separately, with the criteria shared in advance.

Give processing time in every discussion — ten seconds of silence after a question changes who answers — and pair students so the pairing supports language rather than replacing it. Life science topics with strong visual anchors work well for early confidence, and the illustrated life-cycle material in Frogs in the Ecosystem – Biology Lessons (Grades 5–7) | Life Cycles & Habitats lets students describe a real sequence before they have to explain an abstract one. Done consistently, the change is audible: a student who wrote three words in September is arguing at the bench in March about whether the second trial should count.

Related reading from the Teacher Hub

• Meaningful Homework and Independent Practice for Chemical Reactions (Science & Health, Grades 6–12)
• A No-Prep Sub Plan for Energy Transfer (Science & Health, Grades 6–12)
• Using Digital Tools to Teach Food Chemistry (Science & Health, Grades 6–12)