Skip to main content

Let it snow!

Downloaded: 2709

Last edit: 27 November 2025

Back
Resource Type Worksheets and Activities, Lessons, Teaching Resources, Example Programs and Live Lessons
Curriculum Topic Programming
English Key Stage 11-14 year (KS3), 14-16 years (KS4)

This festive-themed lesson introduces students to Python programming by drawing snowflakes using the Turtle graphics library. 

Learning Objectives

  • Understand and apply sequence and iteration in algorithms.
  • Use loops (FOR and WHILE) to simplify repetitive tasks.
  • Develop problem-solving skills by decomposing tasks into smaller steps.
  • Practice debugging and refining code.

Curriculum Links

  • England: Supports National Curriculum goals for designing, writing, and debugging programs, using sequence, selection, and repetition.
  • Wales: Aligns with Science and Technology AoLE, focusing on loops, conditionals, and decomposition.
  • Standards: CSTA and ISTE standards for algorithmic thinking, control structures, and collaborative problem-solving.

Lesson Flow

  1. Introduction: Start with simple Turtle commands to draw basic shapes (e.g., squares).
  2. Pattern recognition: Identify repeating patterns and introduce loops for efficiency.
  3. Snowflake challenge: Students apply loops and angles to create intricate snowflake designs.
  4. Extension: Students bring their snowflake design to life by creating an animated snow scene.

Key Skills Developed

  • Writing and modifying Python code.
  • Using variables, loops, and functions.
  • Applying mathematical concepts like angles and symmetry.
  • Debugging and iterative improvement.

Resources