Skip to main content

Timed math tests

You have 3.2 seconds to figure out the problem below.

Alan knows 90% of the concepts behind the math test, and can do those 90% very quickly.  He always gets 90% on timed math tests.

Bob knows 100% of the concepts, but is a slow worker.  In the timed math test, he gets 75%, but, if given an extra 10 minutes, would get 100%.

Alan graduates with an A; Bob with a C.

You are building a bridge. Who would you hire?

Seems like everyone from Gates to Zuckerberg has problems with how education is carried out today.  I wish I had some of their clout and could help to change the system.

Comments

Post a Comment

Popular posts from this blog

The Fourth R.

Reading, wRiting, aRithmetic, and algoRithms.  My wife and I were just brainstorming about this: how coding should be the next "basic" skill.  Of course, someone was ahead of us and posted this .  It is awesome to see Mozilla Hackasaurus referenced in this article.  It is a small world. In the early days of the printing press, scholars wrote the books; the press was simply used for production (see this article ).  As time went on, "average" people became familiar with the medium, and used it for their own messages.  We are at just that point with the Web.  Software Engineers write the code, and the Web distributes it.   Software Engineers are the algoRithm scholars of today.  They won't be for long.  Soon algoRithms will be taught starting in elementary school, along with the other three R's.
Read more

Connectome as a Book

Your Connectome is a map of your brain.  Every neuron, every synapse. I am only a few pages into Connectome, but was intrigued by a sentence: "Human DNA....has three billion letters....would be a million pages long if printed as a book."  The companion question, "How many pages for the Connectome?" might be answered later in the book, but I thought I would take a shot at it here. Here is the punchline: Your Connectome book is 6.7 million times longer than your DNA book. That human DNA is about a million pages is not too surprising, although it probably is not optimized. According to quora there are between 1500 and 1800 letters per page.  I am going to use round numbers, namely 2000.  Then, the 3x10^9 DNA letters would actually be 1.5 million pages.  But this is very wasteful.  Even using just ASCII we can encode four DNA letters per character, so the book should really only be about 400K pages.  And, this book is much more interesting; in...
Post a Comment
Read more