Young children seem to be almost as intrigued by building and creating as they are by demolishing and dissecting.  That’s just part of why a tools and construction theme is so great for young kids!  And while they’re having a blast, they’re also learning some great concepts.  Try this idea in your block area. Create full-scale blue prints for the children to copy and make.
Using large blocks (foam or wooden) build a creation against a wall and then outline the blocks using blue painter’s tape. You now have a full-scale blueprint!  Encourage children to follow the blueprint or create their own.  Other props in this theme might include hard hats, play tools, tool belts, clip boards and pencils, real blueprints, phones/radios, orange cones, and caution tape. 

Idea taken from Amanda Morgan