Model Behaviour

Trying to get four year 6 boys to concentrate on designing and building their model, was like herding feral cats. Clearly they would much rather play with the animals and bounce on the trampoline - which they kept straying off to do....

But 3 hours later, there was progress. It has to be submitted next Monday so ... No pressure.

I know it's obvious what it is, but just in case the picture is blurry or something, it will be a 10-pin bowling alley.