|This article is about 'the mathematics book'. You may be looking for 'the interactive book'.|
The Fat Controller is tired, so Thomas lends him a helping hand. First of all, he needs to count Oliver's three trucks, help The Fat Controller sort out some shapes and figure out if Trevor will fit in the shed by measuring him, and then last of all, help him by adding and subtracting trucks. The next day, the Fat Controller thanks Thomas for all of his help.
- The Fat Controller
- Oliver (does not speak)
- Troublesome Trucks (do not speak)
- Trevor (does not speak)
- Harold (does not speak)
- There is an activity sticker book as well as a regular book for this story.