Tag Archives: gmat on demand

Video: Two Ways to Strengthen a Critical Reasoning Argument

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In this video, Dave and Jen provide an introduction to “strengthen” questions on the GMAT Critical Reasoning section. As Dave and Jen explain, there are two main ways for an answer choice to strengthen an argument presented in a CR question stem:

  • Validate an assumption on which the conclusion depends
  • Provide an additional piece of evidence that supports the conclusion

Be sure to check out the earlier segments of this Critical Reasoning lesson, part of our GMAT On Demand course, and stay turned for future installments!

Video: How to Approach Two Classic GMAT Assumption Questions

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In this video, Jen and Dave walk you through two typical GMAT Assumption questions — and outline an approach that can help you deal with all arguments on the GMAT Critical Reasoning section.

They start by breaking down each argument’s evidence and conclusion, then explain how a little pre-work can help you eliminate trap answers and identify right answers much more quickly. At the second question (4:30), press pause to try it out before Dave and Jen’s explanation.

For more tips, check out the rest of this Critical Reasoning lesson, or preview other lessons from Knewton GMAT On Demand.

Video: Intro to the Most Common GMAT Critical Reasoning Questions

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In this video, Jen and Dave break down the three most common question types on the GMAT Critical Reasoning section: Weakening, Strengthening, and Assumption questions.

They start by covering the structure that underlies all three question types, then show you two strategies for dealing with Assumption problems in particular: one, how to check the validity of an assumption by using the Negation Test, and two, how “pre-phrasing” can help you recognize an assumption in the answer choices much more quickly.

Stay tuned for the rest of the lesson, where Dave and Jen walk you through a full guide to CR questions and sample problems for each type.

Video: GMAT Ratios 101

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In the fifth and final installment of Knewton’s Intro to GMAT Quant Lesson, expert teachers Jess and Rich give you a chance to try out some tricky Data Sufficiency questions involving ratios. They’ll also talk about proportions, and give you a list of common powers and common decimal-fraction-percentages equivalencies to memorize in order to save time on test day.

If you missed any of the previous lessons, be sure to check them out here!

Video: Intro to Fractions on the GMAT

In the fourth installment of our Intro to GMAT Quant Lesson, Knewton teachers Jess and Rich give you a solid introduction to fractions on the GMAT. Get (re)acquainted with proper and improper fractions, mixed numbers, and reciprocals, and learn the best way to compare and convert fractions on the test. Watch this video to review and test your skills – after all, if you want to master tougher quant problems on the GMAT, the basics should be second nature.

Stay tuned for the next installment of the lesson, coming soon!

Video: Percentages, Ratios, and Fractions on the GMAT

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In part three of Knewton’s Intro to GMAT Quant lesson, Jess and Rich provide a primer on percentages, ratios, and fractions on the GMAT. If it’s been a while since you’ve tackled math problems, this review will give you  exactly what you need to get back on track. Review the difference between “percentage of” and “percentage increase/decrease,” and test your skills with some GMAT practice problems.

Stay tuned for the next installment of the lesson!

Video: Idioms 101

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We recently a released a new and improved on-demand video player in our GMAT course, and to spread the word we’re releasing the first Sentence Correction lesson in nine handy installments. If you’re looking improve your score in SC, be sure to watch all the videos for expert advice on this tricky section.

The final installment of the lesson, shown above, is all about idioms. Idioms are constructions that must be worded in a certain way. For many of our GMAT students, idioms are extremely frustrating because there’s no logical explanation for why they are correct or incorrect. It’s just the way it is!

Often, the GMAT tests which certain preposition must be paired with a noun or verb to express the proper meaning. In this video, expert instructors Jen Rugani and Dave Ingber will provide a primer on spotting idiom errors and figuring out the right answer. There’s also a practice problem built into the video; when you get to the practice question, just pause the video, take about 90 seconds to try it out on your own, and then play the video again for a full explanation.

Check out the video for more details, and if you missed any of the previous installments of SC Lesson 1, be sure to check them all out here!

Video: Intro to Data Sufficiency on the GMAT

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In part two of Knewton’s Intro to GMAT Quant lesson, Jess and Rich walk you through the fundamentals of Data Sufficiency. Learn the two main types of DS questions you have to recognize on test day, and see how you do on an example of each one.

Be sure to check out Rich and Jess’s rule that has to be second nature for every GMAT student: On Yes/No Data Sufficiency questions, “no” does not necessarily mean “insufficient”!

Video: Intro to Pronouns on the GMAT

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We recently a released a new and improved on-demand video player in our GMAT course, and to spread the word we’re releasing the first Sentence Correction lesson in nine handy installments. If you’re looking improve your score in SC, be sure to watch all the videos for expert advice on this tricky section.

The eighth installment of the lesson, shown above, is all about pronoun errors on GMAT SC. As expert instructors Jen Rugani and Dave Ingber explain, once you understand pronoun errors, they’re pretty easy to spot.

You just need to be sure that every underlined pronoun on the GMAT SC section a) has a clear and logical antecedent and b) agrees with its antecedent in number. Watch out for pronoun/antecedent agreement when the sentence contains an unusual antecedent (ex. a collective noun, noun clause, or indefinite pronoun).

Watch the video to learn more, and be sure to stay tuned for the final SC lesson installment!

Video: Understanding Verb Tense Errors on the GMAT

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We recently a released a new and improved on-demand video player in our GMAT course, and to spread the word we’re releasing the first Sentence Correction lesson in nine handy installments. If you’re looking to improve your score in SC, be sure to watch all the GMAT videos for expert advice on this tricky section.

The seventh installment of the lesson, shown above, provides a primer on verb tense errors on GMAT SC. Even if you’re a native English speaker, it’s important to know the grammatical rules of verb tense — in the case of these errors, simply “trusting your ear” will often get into trouble.

Verb tense errors occur when:

  • Verbs are not in the same tense, even though no indication of a shift is present.
  • Verbs don’t correctly reflect time shifts indicated by the sentence.

The video also includes a practice problem to help you test your understanding of the concept; when you get to that part of the video, simply pause the lesson, take about 90 seconds to answer the question, and then press play to hear the explanation.

Watch the video for more details from our expert instructors–and be sure to stay tuned for the next SC lesson installment!