Posts Tagged ‘OLLI’
Math Brain Teaser: Concentric Shapes or The Unkindest Cut of All, Part 2 of 2
If you missed Part 1, also written by puzzle master Wes Carroll, you can start there and then come back here to Part 2. Concentric Shapes: The Unkindest Cut of All, Part 2 of 2.Difficulty: HARDER Type: MATH (Spatial)Question:Imagine a square within a circle within a square.The circle just grazes each square at exactly four points.Find the ratio of the area of the larger square to the smaller.In this puzzle you are working out many of the same skills as in Part I: spatial visualization (occipital lobes), memory (temporal lobes), logic (frontal lobes), planning (frontal lobes), and hypothesis generation (frontal lobes).Click to read the Solution and Explanation.
Read MoreLifelong Learning and Brain Health Event in San Francisco on May 16
If you are in the Bay Area, we hope to see you at this event! Feel free to forward the invitation below to anyone you know who may be interested. The growing movement for improving brain health has brought many interested professionals and interested community members to the table. Sharing our information, activities, and planned…
Read MoreBrain Exercise for the Frontal lobes: the McKinsey Mind
My first full-time job was as a strategic consultant at McKinsey & Company. A very intense 2‑year learning experience. Their Alumni News Service recently interviewed me and published this great article on SharpBrains. The writer does a superb job of providing an overview of what we do, so I recommend you read it. I’d like…
Read MoreMath Brain Teaser: The Unkindest Cut of All, Part 1 of 2
Here is another mathematical puzzle from puzzle master Wes Carroll … The Unkindest Cut Of All, Part 1 of 2.Difficulty: HARD.Type: MATH (Spatial).Question:The area of a square is equal to the square of the length of one side.So, for example, a square with side length 3 has area (3^2), or 9. What is the area of a square whose diagonal is length 5?
Read More#14 Brain Teaser: Party For Polyglots
We are delighted to introduce you to Puzzle Master Wes Carroll who has graciously created a few new puzzles to bend all those sharp brains out there! Wes aspires to the Renaissance ideal of excellence in multiple fields: he is the head of Do The Math private tutoring services, Puzzle Master for the Ask A Scientist lecture series, and an internationally touring performer and teacher of music. Find out more at wescarroll.com.Party For Polyglots.Question:Of the 100 people at a recent party, 90 spoke Spanish, 80 spoke Italian, and 75 spoke Mandarin.At least how many spoke all three languages?
Read MoreBilingual brains stay sharp longer
In study, Bilingual brains stay sharp longer We have seen a number of studies on why and how speaking more than one language may help build a Cognitive Reserve (interview with Yaakov Stern) that protects us against cognitive decline. This article does a good job at explaining what may be going on (bold added by me):…
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