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....