Most construction workers will brag on their personal set of skills which they claim are un-paralleled to any other. Carpentry students on the other hand complain of not constructing projects in their first few weeks of class. Having instructional theories in construction mathematics makes what they couldn't imaging carpentry is all about easier. This construction mathematics book Carpentry by the Numbers I refer to as "taking productive measures" teaches how to minimize mistakes without using the calculator. Remember; the calculator only computes the results to the question you've entered. Why not build a stronger mathematical skill that'll help speed up production? After all, the goal here is to create a well-rounded highly skilled valued craftsman, who's productive in producing quality work. Like cutting and nailing; estimating and managing is also a part of every carpenter's daily task; however, without a solid mathematical foundation, these would be very difficult to perform. In fact, estimating material quantities, cost, profits overages etc. is the first skill you'll need and use on any job. Example: How much would it cost me to have you install 17" x 17" ceramic tiles in my 15' x 22' dining room area? 164.42908 Or 165 ceramic tiles are needed: 15' x 22' = 330 17