Want to teach high school mathematics? The NES High School Mathematics study guide from XAMonline makes it easy by thoroughly covering 16 competencies and 73 skills to give you the knowledge and confidence you need for the real test. The study guide includes a 150-question sample test and covers categories such as Mathematical Processes and Number Sense, Patterns, Algebra and Functions. There are also sections which cover Trigonometry, Calculus, Statistics and Probability.