Mouse Maze - KS3 Algorithm Starter

Mouse Maze is a fun introduction to decomposition, algorithms and iteration (loops). It works well as an extended starter.
Print out the simple maze, or distribute the PowerPoint file to students (the mouse icon can be dragged and rotated). They must list the steps required for Mousey to reach the cheese.

Decomposition: breaking the problem into smaller steps (i.e. solving the maze)
Algorithms: listing the steps to guide Mousey through the maze
Iteration: making the algorithm more efficient by repeating parts of it (challenge / extension activity)

The download includes:

• A full set of teacher’s instructions
• PowerPoint maze for students which can be used electronically or printed out
• PowerPoint 6 slides showing the task, solution, sections which are repeated, and a more efficient solution. The final slide has definitions of ‘algorithm’ and ‘decomposition’, plus a note to tell students that they have already achieved both during the lesson.

Pupils enjoy the activity and it is a great way to introduce the concepts for the first time. I hope you and your pupils enjoy it :)