At the end of the last activity pupils were introduced to procedures. This activity takes a deeper look and asks them to design and write their own.

When writing procedures groups can discuss how effective they are and how they increase the efficiency of the programme.

Show pupils presentation7a - this explains procedures. There are notes7a and worksheet7a to support it.

Show pupils the language7 for this lesson.

Using worksheet7a pupils are required to write procedures for their own maze design.

Remind pupils to save these procedures with suitable names.

Points to note:

• The procedures should be parts of the main design that can be called and assembled to make other designs.
• Some procedures may be quite simple, e.g. the example gap procedure.
• Procedures should be written so that they can be included in others and be joined together with a line of instructions.

Pupils who have successfully written and created a range of procedures may like to try assembling them in a different order to create new maze designs.

Develop this by discussing:

• Why and how this could be used to develop business opportunities.
• The problems that offering different designs may cause.

Give out the sheet homework7. This asks pupils to create a page for their final report showing how they used procedures.

You may feel it appropriate to provide the homework sheet in electronic format for those pupils with computer access at home. Consideration should then be given to:

• How they would return the work and the style - electronic or printed.
• Virus protection.
• Authenticity of the work.