Shapes & Crystal Flowers Repetition

An introduction to repetition using Scratch

Age: 7-11 years

Type: Scratch

Curriculum Links to: Maths, Art

The Shapes & Crystal Flowers Repetition has been rated 4 stars


In this activity pupils design algorithms to draw patterns made of simple shapes before writing a Scratch program to draw their shapes. In doing so, they learn about repetition.


  • I can write a program that uses a repeat command.
  • I can explain what the repeats in my program do.


  • Informal teacher assessment of progress during the lesson. Key pupil knowledge and skills to identify include:
    • Do pupils understand the concept of repetition?
    • Do pupils see the benefit of using repetition commands?
    • Can pupils use repletion commands to draw shapes?
    • Can pupils nest repletion commands to create crystal flowers?
    • Can pupils debug their programs when required?
  • Formal, summative assessment of Scratch projects (pairs).
  • Peer assessment and feedback of crystal flower programs during the plenary.


This lesson in your curriculum


  • KS2: use repetition in programs


  • Year 3: draw 2D shapes; recognise angles as a property of a shape or a description of a turn
  • Year 4: compare and classify geometric shapes, including quadrilaterals and triangles, based on their properties and sizes
  • Year 5: know angles are measured in degrees: estimate and compare acute, obtuse and reflex angles; draw given angles, and measure them in degrees (°); identify: angles at a point and one whole turn (total 360°)
  • Year 6: draw 2-D shapes using given dimensions and angles; compare and classify geometric shapes based on their properties and sizes and find unknown angles in any triangles, quadrilaterals, and regular polygons

Art and Design

  • To develop their techniques, including their control and their use of materials, with creativity, experimentation and an increasing awareness of different kinds of art, craft and design