Color coding of circuit quantities in introductory circuit analysis instruction

Jana Reisslein, Amy Johnson, Martin Reisslein

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Learning the analysis of electrical circuits represented by circuit diagrams is often challenging for novice students. An open research question in electrical circuit analysis instruction is whether color coding of the mathematical symbols (variables) that denote electrical quantities can improve circuit analysis learning. The present study compared two groups of high school students undergoing their first introductory learning of electrical circuit analysis. One group learned with circuit variables in black font. The other group learned with colored circuit variables, with blue font indicating variables related to voltage, red font indicating those related to current, and black font indicating those related to resistance. The color group achieved significantly higher post-test scores, gave higher ratings for liking the instruction and finding it helpful, and had lower ratings of cognitive load than the black-font group. These results indicate that color coding of the notations for quantities in electrical circuit diagrams aids the circuit analysis learning of novice students.

Original languageEnglish (US)
Article number6783753
Pages (from-to)7-14
Number of pages8
JournalIEEE Transactions on Education
Issue number1
StatePublished - Feb 1 2015


  • Circuit diagram
  • electrical circuit analysis
  • font color
  • multiple representations
  • novice learners

ASJC Scopus subject areas

  • Education
  • Electrical and Electronic Engineering


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