Animation 2 Automata theory 2 Computer Science Education 2 Computer aided instruction 2 Computer programming 2 Education computing 2 Formative assessment 2 Formative feedbacks 2 High school students 2 Interactive learning environment Interactive learning environments 2 K-12 education 2 Natural language processing systems 2 Observational study 2 Pattern matching 2 Software platforms 2 Students 2 Teaching 2 automatic formative assessment 2 computer science education 2