Trace the Code

Tools

1 ready to use.

Code Tracer

Before each line of a short program runs, write your prediction in the trace table, then run the line and watch the real value slide in beside your guess. Twelve programs with variables, repeat and if, and a Workbench for changing the numbers.

Computer Science Grade 4 Puzzle

Lesson plans

One class period each, built around a tool. Print them, change them, share them.

• Code Tracer45 minutes · I can trace a short program one line at a time to show how its variables change, and check whether its note tells the truth.