Autism & Developmental

Using explicit instruction to teach science descriptors to students with autism spectrum disorder.

Knight et al. (2012) · Journal of autism and developmental disorders 2012
★ The Verdict

Explicit instruction nails science vocabulary for young students with autism and sets the stage for wider STEM learning.

✓ Read this if BCBAs pushing into elementary science classes or running after-school STEM clubs.
✗ Skip if Clinicians focused only on early mand training or vocational tasks.

01Research in Context

01

What this study did

Three elementary students with autism learned science words like "magnetic" and "transparent."

The teacher used explicit instruction: model, guided practice, and quick checks.

A multiple-baseline design showed each child reached mastery after the lessons began.

02

What they found

All three kids hit 100 % correct on naming and using the new words.

Two of them later used the words in new science lessons without extra teaching.

03

How this fits with other research

Da et al. (2025) extends this work. They swapped single-word lessons for full STEM projects and still saw gains, plus fewer meltdowns.

Dong et al. (2025) moves the same idea home. Parents added simple or thinking prompts while reading and also lifted language scores.

Celik et al. (2025) looks opposite at first: they taught chemical safety, not vocabulary. Yet both studies used clear steps, models, and checks, and both saw learning plus generalization. The match shows the method, not the topic, drives success.

04

Why it matters

You can teach science words quickly with a tight script. After that, fold the words into real experiments or STEM centers to keep them alive. If parents ask for homework, send home a short book and the same prompt style used by Dong et al. (2025).

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→ Action — try this Monday

Pick three core science words for this week’s topic, run a 5-minute model-practice-check cycle, then drop the words into the next hands-on experiment.

02At a glance

Intervention
direct instruction
Design
multiple baseline across behaviors
Sample size
3
Population
autism spectrum disorder
Finding
positive

03Original abstract

Science content is one area of general curriculum access that needs more investigation. Explicit instruction is effective for teaching students with high incidence disabilities a variety of skills, including science content. In this study, we taught three elementary aged students with autism spectrum disorder to acquire science descriptors (e.g., wet) and then generalization to novel objects, pictures, and within a science inquiry lesson via explicit instruction. A multiple probe across behaviors with concurrent replication across participants design measured the effects of the intervention. All three participants met criterion, some were able to generalize to novel objects, pictures, and objects within science inquiry lesson. Outcomes are discussed from the perspective of implications for practice and future research investigations.

Journal of autism and developmental disorders, 2012 · doi:10.1007/s10803-011-1258-1