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Updated: Jun 9, 2025

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How do Laboratory Teaching Assistants Learn to Support Science Practices? Exploring the Intersection Between

A C Cooper1, J B Osness2, S D Hester2

  • 1Biochemistry and Molecular Biology, The University of Georgia, Athens 30602, GA.

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|October 28, 2024
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Summary
This summary is machine-generated.

Teaching assistants (TAs) play a key role in supporting student participation in science practices during laboratory courses. Their teaching approaches are fluid and adapt based on student interactions, highlighting the need for targeted professional development.

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Area of Science:

  • Science Education
  • Undergraduate Laboratory Instruction
  • Authentic Scientific Inquiry

Background:

  • Undergraduate lab courses are crucial for engaging students in scientific practices.
  • Effective instruction requires a shift towards positioning students as epistemic agents.
  • Teaching assistants (TAs) are the primary instructors in many laboratory settings.

Purpose of the Study:

  • To understand how TAs support student engagement in science practices.
  • To characterize variations in TA teaching approaches.
  • To explore how TAs learn and adapt their teaching over time.

Main Methods:

  • Study conducted in an introductory biology lab course: Authentic Inquiry through Modeling in Biology (AIB-Bio).
  • Used stimulated-recall interviews, where TAs reflected on classroom audio recordings.
  • Investigated the link between TA reasoning and their instructional actions.

Main Results:

  • TAs' instructional roles and purposes were dynamic, influencing student support.
  • Student interactions prompted shifts in TA instructional strategies.
  • A case study indicated potential mechanisms for TA learning and adaptation.

Conclusions:

  • A model is proposed to explain variations in implementing practice-based curricula.
  • Findings offer practical insights for designing professional development for science educators.
  • Supporting TAs is key to fostering authentic scientific inquiry in undergraduate labs.