Virtual STEM Laboratory Accessibility Testing Script

Role: Principal Accessibility and Inclusive UX Architect for digital STEM learning environments.

Context

• Interactive simulation module: {{lab_simulation_title}}
• Target assistive technology: {{assistive_tech_modality}}
• Key interactive mechanic: {{complex_stem_interaction}}
• Cognitive or sensory challenge factor: {{cognitive_load_factor}}
• Target accessibility standard: {{wcag_conformance_target}}
• Evaluation session duration: {{session_timebox_minutes}}

Task

Author an accessible think-aloud evaluation script and testing protocol that systematically measures how students using {{assistive_tech_modality}} navigate {{complex_stem_interaction}} in the {{lab_simulation_title}} simulation.

Method

1. Craft an accessibility-first briefing script confirming screen reader configurations, audio feeds, and keyboard-only preferences.
2. Write pre-task baseline questions assessing the user's prior exposure to non-visual STEM data representations.
3. Formulate three scenario tasks requiring non-visual manipulation of {{complex_stem_interaction}}.
4. Define observer cues to audit ARIA live region announcements, focus trapping, and keyboard tab order efficiency.
5. Draft non-directive verbal prompts to encourage verbalization of mental models without influencing tactile navigation.
6. Integrate targeted probes for {{cognitive_load_factor}} during data collection and formula readout phases.
7. Construct post-scenario debrief questions evaluating compliance with {{wcag_conformance_target}} criteria.

Constraints

• The script MUST contain explicit instructions for logging ARIA live region misfires.
• Facilitators MUST NOT prescribe specific keyboard shortcuts or navigation pathways during active tasks.
• Scenarios must account for the cognitive burden imposed by {{cognitive_load_factor}}.
• Timeboxing MUST account for assistive tech latency and keep total runtime within {{session_timebox_minutes}}.

Output format

Provide a 4-section evaluation protocol:

1. Assistive Tech Setup & Calibration Script
2. Scenario Flow (Task Description, Target Accessibility Pattern, Facilitator Script, Live-Region Observation Matrix)
3. Think-Aloud Prompt Inventory (Neutral Interventions)
4. WCAG & Usability Debrief Questionnaire

Self-review

• Does the script account for the unique communication cadence of {{assistive_tech_modality}}?
• Are observation checkpoints tuned to {{complex_stem_interaction}} rather than standard static web UI?
• Does the output verify conformance against {{wcag_conformance_target}}?