Some of my students have had good experiences with the Knewton materials. If nothing else, it would be a good source of new tests if you have exhausted the Manhattan and GMATPrep exams. Also keep in mind that a new edition of the
OG is coming out next month, and that should be a great source of additional problems.
Having said that, I should emphasize that most people don't see improvement simply from working through more material. It's much more important to thoroughly review and understand the material you already have. Perhaps you've memorized every answer in the
OG by now, but can you pick up any verbal question in there and explain why each answer is right or wrong? If your timing is not a big problem, this is probably the single most important thing you can do to improve, especially in verbal. If you have worked through our materials, you know quite a few rules and strategies. The trick is applying them consistently, and interpreting them flexibly in different situations. Detailed analysis of individual problems can really help there. It helps to do as much analysis as possible *before* checking the answers/explanations. Force yourself to come up with clear reasoning for your eliminations and selections, and you should make some noticeable improvement. My post here provides a list of good questions to ask yourself:
help-reducing-sc-errors-127473.htmlIt is also useful to put some safety measures in place to make sure you are answering the right question! You'd be amazed how often I find even my higher-scoring students completely misidentifying the question, and therefore choosing an inappropriate answer. Spend some time studying how different question types are phrased. How can I tell when a CR question is asking me to strengthen the argument ("Which of the following, if true, provides support for the statements above?") rather than make an inference ("Which of the following is
supported by the statements above?")? Then make sure you always take a moment to pause and identify the task before tackling the answers.
Good luck!
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