### TTC Video The Secrets of Mental Math by Professor Arthur T Benjamin

**TTC Video - The Secrets of Mental Math by Professor Arthur T Benjamin | 2.54 GB**

*Genre: E-Learning*

Or 4821 ÷ 9? Most of us, when faced with math problems like these, immediately reach for a calculator or a pen.But imagine if you could perform these and other seemingly difficult梑ut surprisingly easy梒alculations right in your head.

Seems like an impossible feat? It's not.

One key to improving and expanding your math potential梬hether you're a corporate executive or a high-school student條ies in the powerful ability to perform mental math calculations. Solving basic math problems in your head is a gateway to success in understanding and mastering higher mathematical fields such as algebra, statistics, and calculus. It's a skill that offers other lifelong benefits, including

* giving you a competitive edge in school or at work;

* keeping your mind active and sharp at any age;

* improving your performance on standardized tests; and

* learning to solve problems by using a variety of methods.

Mental mathematics also is valuable when you're shopping for groceries or figuring out how much to tip at a restaurant. And perhaps the best part? Learning how to do mental math can be fun梕specially when you're learning in the company of Professor Arthur T. Benjamin of Harvey Mudd College, one of the most engaging and entertaining members of The Great Courses faculty. The Secrets of Mental Math, his exciting new 12-lecture course, guides you through all the essential skills, tips, and tricks for improving and enhancing your ability to solve a range of mathematical problems right in your head.

Mental Math桵ade Simple

Mental math, as Professor Benjamin demonstrates, is not as daunting as it may seem. In fact, it's an ability you already have梱ou just may not know it. Performing calculations in your head is all just a process of breaking down a large problem into simpler and simpler problems until it's finally reduced to a single answer.

Assuming no detailed knowledge of mathematics other than what you learned in elementary school, Professor Benjamin has designed The Secrets of Mental Math to be accessible to anyone looking to tap into or strengthen his or her mental calculating skills.

In the first part of the course, you focus on specific strategies for performing the basic nuts-and-bolts operations of mental mathematics.

* Adding any two numbers up to three digits

* Subtracting any two numbers up to three digits

* Multiplying any two numbers up to two digits

* Dividing any number by a number up to two digits

Dr. Benjamin fills each lecture with a wealth of practice problems to follow along with and get you engaged in the joys of mentally solving math problems.

Once you've gotten these four fundamental operations down, you then branch out into some interesting directions that continue to hone your mental math skills. Among the exciting skills you'll develop are

* how to find approximate answers using the art of "guesstimation";

* how to quickly find squares and square roots;

* how to improve your memory for numbers (including phone and credit card numbers) by using a simple phonetic code;

* how to approach enormous calculations with increased confidence and accuracy;

* how to mentally determine the day of the week of any date in history; and

* how to do rapid pencil-and-paper mathematics in ways seldom taught in school.

And his accompanying course guidebook is filled with additional problems you can use to practice your newfound skills.

Discover Valuable Mathematical Tips and Techniques

Throughout The Secrets of Mental Math, Professor Benjamin leads you through some fun梐nd memorable梩echniques for tackling specific mathematical calculations. Here's an example of one strategy he calls "Create a Zero, Kill the Zero," helpful for determining the divisibility of any odd number that doesn't end in 5.

Is 1232 a multiple of 7?

* Start by adding or subtracting a multiple of 7 to create a 0 at the end (1232 + 28 = 1260).

* Kill the 0 from the new number (1260 becomes 126).

* Add or subtract a multiple of 7 to create another zero at the end (126 + 14 = 140), then kill the 0 at the end.

* Determine whether the new number is a multiple of the original divisor (yes, it's 14).

* Thus, 1232 is a multiple of 7.

An Encouraging, Rewarding Look at Numbers

But you'll get more than just fun strategies to help make mental math easier. Learning with Professor Benjamin is like having a supportive coach right by your side梥omeone to encourage you, challenge you, and instill mathematical confidence in you. It's this same teaching method that has won him a host of prestigious awards from the Mathematical Association of America, including the Deborah and Franklin Tepper Haimo Award for Distinguished College or University Teaching of Mathematics.

So prepare yourself for an unforgettable adventure in mental mathematics. Enjoyable, eye-opening, and immensely rewarding, The Secrets of Mental Math makes basic math quicker and easier than ever before. And it's a powerful way to take your first, more confident steps into the intriguing梐nd undeniably fun梬orld of numbers.

About Your Professor

Dr. Arthur T. Benjamin is Professor of Mathematics at Harvey Mudd College. He earned a B.S. from Carnegie Mellon University and a Ph.D. in Mathematical Sciences from Johns Hopkins University.

Professor Benjamin's teaching has been honored repeatedly by the Mathematical Association of America (MAA). In 2000, he received the MAA Deborah and Franklin Tepper Haimo National Award for Distinguished College or University Teaching of Mathematics. In addition, the MAA named Professor Benjamin the 2006?008 George Pólya Lecturer.

Available Exclusively on Video

Because of the highly visual nature of the subject matter, this course is available exclusively on video. It features hundreds of visual elements, including step-by-step walkthroughs of mental math problems, as well as graphics and illustrations.

Course Lecture Titles

12 Lectures

30 minutes / lecture

1. Math in Your Head!

Dive right into the joys of mental math. First, learn the fundamental strategies of mental arithmetic (including the value of adding from left to right, unlike what you do on paper). Then, discover how a variety of shortcuts hold the keys to rapidly solving basic multiplication problems and finding squares.

2. Mental Addition and Subtraction

Professor Benjamin demonstrates how easily you can mentally add and subtract one-, two-, and three-digit numbers. He also shows you shortcuts using the complement of a number (its distance from 100 or 1000) and demonstrates the uses of mental addition and subtraction for quickly counting calories and making change.

3. Go Forth and Multiply

Delve into the secrets of easy mental multiplication桺rofessor Benjamin's favorite mathematical operation. Once you've mastered how to quickly multiply any two-digit or three-digit number by a one-digit number, you've mastered the most fundamental operations of mental multiplication and added a vital tool to your mental math tool kit.

4. Divide and Conquer

Turn now to the last fundamental operation of arithmetic: division. Explore a variety of shortcuts for dividing by one- and two-digit numbers; learn how to convert fractions such as 1/7 and 3/16 into decimals; and discover methods for determining when a large number is divisible by numbers such as 3, 7, and 11.

5. The Art of Guesstimation

In most real-world situations梥uch as figuring out sales tax or how much to tip梱ou don't need an exact answer but just a reasonable approximation. Here, develop skills for effectively estimating addition, subtraction, multiplication, division, and square roots.

6. Mental Math and Paper

Sometimes we encounter math problems on paper in our daily lives. Even so, there are some rarely taught techniques to help speed up your calculations and check your answers when you are adding tall columns of numbers, multiplying numbers of any length, and more.

7. Intermediate Multiplication

Take mental multiplication to an even higher level. Professor Benjamin shows you five methods for accurately multiplying any two-digit numbers. Among these: the squaring method (when both numbers are equal), the "close together" method (when both numbers are near each other), and the subtraction method (when one number ends in 6, 7, 8, or 9).

8. The Speed of Vedic Division

Vedic mathematics, which has been around for centuries, is extremely helpful for solving division problems梞uch more efficiently than the methods you learned in school. Learn how Vedic division works for dividing numbers of any length by any two-digit numbers.

9. Memorizing Numbers

Think that memorizing long numbers sounds impossible? Think again. Investigate a fun梐nd effective梬ay to memorize numbers using a phonetic code in which every digit is given a consonant sound. Then practice your knowledge by trying to memorize the first 24 digits of pi, all of your credit card numbers, and more.

10. Calendar Calculating

The fun continues in this lecture with determining the day of the week of any date in the past or in the future. What day of the week was July 4, 2000? How about February 12, 1809? You'd be surprised at how easy it is for you to grasp the simple mathematics behind this handy skill.

11. Advanced Multiplication

Professor Benjamin shows you how to do enormous multiplication problems in your head, such as squaring three-digit and four-digit numbers; cubing two-digit numbers, and multiplying two-digit and three-digit numbers. While you may not frequently encounter these large problems, knowing how to mentally solve them cements your knowledge of basic mental math skills.

12. Masters of Mental Math

Professor Benjamin concludes his exciting course by showing how you can use different methods to solve the same problem; how you can find the cube root of large perfect cubes; how you can use the techniques you've learned and mastered in the last 11 lectures; and more.

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