Communicating about computational thinking: understanding affordances of portfolios for assessing high school students’ computational thinking and participation practices

Deborah Fields, Debora Lui, Yasmin Kafai, Gayithri Jayathirtha, Justice Walker, Mia Shaw

Research output: Contribution to journalArticlepeer-review

Abstract

Background and Context: While assessment of computational thinking concepts, practices, and perspectives is at the forefront of K-12 CS education, supporting student communication about computation has received relatively little attention. Objective: To examine the usability of process-based portfolios for capturing students’ communication about their computational practices regarding the process of making electronic textile projects. Method: We examined the portfolios of 248 high school students in 15 introductory CS classrooms from largely underserved communities, using a formal rubric (top-down) to code computational communication and an open-coding scheme (bottom-up) to identify computational practices described. Findings: Students demonstrated stronger abilities to communicate about computation using text than visuals. They also reported under-assessed CT practices like debugging, iterating, and collaborating. Students of experienced e-textile teachers performed substantially better than those with novice e-textile teachers. Implications: Portfolios provide a viable addition to traditional performance or survey assessments and meet a need to promote communication skills.

Original languageEnglish (US)
Pages (from-to)224-258
Number of pages35
JournalComputer Science Education
Volume31
Issue number2
DOIs
StatePublished - 2021
Externally publishedYes

Keywords

  • assessment
  • communication
  • Computer science education
  • e-textiles
  • maker education
  • portfolios

ASJC Scopus subject areas

  • General Computer Science
  • Education

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