Stories in the air (I) Published on April 5, 2022April 4, 2022 by fivecolorssandt@icloud.com The definitive version There are some stories you just know. How? Read More
Reading the dial (I) Published on February 15, 2022February 14, 2022 by fivecolorssandt@icloud.com The graph and the digital clock How do you tell time? Read More
Knowing too much (II) Published on February 8, 2022February 6, 2022 by fivecolorssandt@icloud.com Mind the gap Sometimes there’s a space between too little and too much. Read More
Knowing too much Published on February 1, 2022January 30, 2022 by fivecolorssandt@icloud.com Experience and word problems Who makes the best teacher? Read More
Knowing your limits Published on January 18, 2022January 14, 2022 by fivecolorssandt@icloud.com The art of the possible We consider being more realistic in education. Read More
Unnatural mathematics Published on December 21, 2021December 19, 2021 by fivecolorssandt@icloud.com Horizontal and vertical Learning math involves unlearning many obvious things. Read More
The problem problem Published on December 14, 2021December 13, 2021 by fivecolorssandt@icloud.com A pursuit curve Answering the problems you get in class is less difficult than posing them in the first place. Read More
Know thyself Published on October 12, 2021October 10, 2021 by fivecolorssandt@icloud.com Learning and testing Constructing a useful test can be very difficult. Read More
The courage of one’s calculations Published on August 10, 2021August 9, 2021 by fivecolorssandt@icloud.com Knowledge and its uses Knowing how to do something, and doing it, are not the same thing. Read More
Economic instability Published on July 27, 2021July 26, 2021 by fivecolorssandt@icloud.com What they don’t tell you We suggest another approach to teaching economics. Read More