Algorithm
Guided program simulation
Trace
Follow the state, one step at a time.
Read the highlighted line, predict every value in the current row, and check the complete state before advancing. The trace table makes changes to variables, conditions, indexed data, and output visible.
- Read the prompt and starting state.
- Follow the highlighted line.
- Enter the program state for that step.
- Correct mistakes before continuing.
Dr. Teach TechTrace
Local student workspace
Trace
Follow the state, one step at a time.
No password. No online account. Your identity, step attempts, current values, completed traces, and progress stay in this browser unless you save a backup. Nothing is sent to Dr. Teach Tech.
Completed0in this data set
Step checks0including corrections
Current position—No problem selected
Program state
Trace table
Trace complete
You followed every state transition.
Completion evidence
Download a trace screenshot
The PNG shows the locked learner identity, completion ID, timestamps, problem details, and correct trace table. It can be generated once for this completed trace.
Privacy and local data
Trace stores this student's data-set progress, current problem, current row values, attempts, and completion records only in this browser.