Assess students' ability to analyze and debug logic errors in block-based programs that use nested loops, conditionals, and variables. Tasks include tracing execution to predict outputs, locating off-by-one and infinite-loop faults, correcting incorrect boolean logic and variable updates, identifying scope/order issues, and proposing specific block-level fixes with stepwise justification and simple test cases. Designed for Grade 6–8 advanced learners with emphasis on reasoning and explanation.