### Maze 100

Can you go through this maze so that the numbers you pass add to exactly 100?

### Delia's Routes

A little mouse called Delia lives in a hole in the bottom of a tree.....How many days will it be before Delia has to take the same route again?

### Snails' Trails

Alice and Brian are snails who live on a wall and can only travel along the cracks. Alice wants to go to see Brian. How far is the shortest route along the cracks? Is there more than one way to go?

##### Stage: 2 Challenge Level:

We received some fantastic solutions to this Bernard's Bag investigation. One of these came from Adam, from Milton Mount School. Children at Summercroft Junior School who go to the lunchtime Challenge Club sent us some very interesting work: Laura B and Adam sent this diagram showing the longest possible route for a path 3 paving stones wide and 14 long:

Along with Laura S, Eleanor and Oliver, the pupils at the club have taken the investigation further and begun to generalise. They have found a way to work out the number of "steps" in the longest possible route.

Laura S and Eleanor explain:

We found the longest route by taking the length (L), the amount of starting places there were (P) and then took (PxL) - (P-l) = The longest possible route.

Oliver, Laura S and Eleanor extended this to a path 4 paving stones wide:

Laura S and Eleanor point out that "there are variations on this, which are just as long". Oliver says that he worked this out using

(PxL)-(P-2)

Perhaps you'd like to look into these patterns further.