Here is a list of common publication venues for algorithm visualization literature. SIGCSE maintains a larger list that covers all aspects of computer science education.

Journals

• ACM Transactions of Computing Education (TOCE) (formerly ACM-JERIC)
• IEEE Education Society
• IEEE Transactions of Education, published by the IEEE Education Society
• Journal of Engineering Education, published by the American Society for Engineering Education
• Journal of Visual Languages and Computing

Conferences

• ACM Special Interest Group on Computer Science Education (SIGCSE)
  • Annual SIGCSE Symposium
  • Annual Conference on Innovation and Technology in Computer Science Education (ITiCSE)
  • International Computing Education Research (ICER) Workshop
• ACM Symposium on Software Visualization (SoftVis)
• Program Visualization Workshop
• KOLI CALLING INTERNATIONAL CONFERENCE ON COMPUTING EDUCATION RESEARCH
• IEEE International Workshop on Visualizing Software for Understanding and Analysis
• IEEE International Conference on Program Comprehension
• Advanced Visual Interfaces
• Interactive Computer Aided Learning (ICL)
  • Interactive Mobile and Computer Aided Learning (IMCL)
  • E-Learning in the Workplace (ICELW)
  • Interactive Computer Aided Blended Learning (ICBL)

Leave a comment if you know of more!