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Classroom practice for understanding pointers using learning support system for visualizing memory image and target
Koichi Yamashita1, Ryota Fujioka2, Satoru Kogure2
11Faculty of Business Administration, Tokoha University, 1230 Miyakoda, Kita-ku, Hamamatsu, Shizuoka 431-2102 Japan.
Research and Practice in Technology Enhanced Learning
|January 1, 2019
Summary
This study introduces TEDViT, a visualization system that helps novice C programming learners understand pointers by showing memory images and data structures. Classroom practice showed TEDViT effectively improved pointer comprehension and reduced learning disparities.
Area of Science:
- Computer Science Education
- Software Visualization
- Programming Pedagogy
Background:
- Pointers in C programming present significant learning challenges for novices.
- Existing visualization tools often obscure crucial details like variable values and memory allocation.
- Effective visualization is key to supporting understanding of complex programming concepts.
Purpose of the Study:
- To evaluate the effectiveness of the TEDViT system in enhancing C programming pointer comprehension.
- To assess TEDViT's ability to support both learners and instructors in educational settings.
- To investigate the impact of visualizing memory images and target domain worlds on learning outcomes.
Main Methods:
- Developed and implemented TEDViT, a program visualization system.
- TEDViT simultaneously visualizes program code, memory images (variable values), and the target domain world (data structures).
- Conducted classroom practice integrating TEDViT for teaching C pointers, followed by a questionnaire-based assessment.
Main Results:
- Classroom practice using TEDViT provided significant support for participants in understanding pointers.
- The use of TEDViT demonstrated a positive effect in reducing the unevenness of understanding among learners.
- Teacher-defined visualization policies facilitated tailored instruction based on diverse learner backgrounds.
Conclusions:
- The TEDViT framework, through integrated classroom practices, effectively supports novice learners in grasping the concept of pointers.
- TEDViT aids instructors in managing classes and improving teaching performance, leading to enhanced student understanding.
- Visualizing concrete memory states alongside abstract data structures is a promising pedagogical approach for difficult programming concepts.
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