30 Python trace table tasks for GCSE Computer Science, from simple for loops to 2D lists and subroutines. Colour-coded and every answer checked by code.

A bank of 30 original trace table tasks in Python that build in difficulty. Use them as starters, a full lesson, homework or exam revision. Suitable for AQA, OCR, Edexcel and WJEC GCSE Computer Science.

30 tasks in 9 sections

• For loops (tasks 1 to 4)
• Selection in loops (5 to 7)
• User input (8 to 10)
• Strings (11 to 14)
• While loops (15 to 18)
• Nested loops (19 to 20)
• Lists (21 to 24)
• 2D lists (25 to 26)
• Subroutines (27 to 30)

Every task includes

• The Python code with colour highlighting
• A trace table already sized with the right columns and number of rows
• “The user enters these values” inputs where needed
• A difficulty label: green, amber or red
• A teacher note explaining the tricky part, to use as a hint

What’s included

• Task deck (editable PowerPoint, 34 slides) with a rules slide and contents page
• Answer deck with every trace table completed in red

Every program has been run to check that the answers are correct.