New books and old Published on February 20, 2024February 18, 2024 by fivecolorssandt@icloud.com Adding and subtracting We have too many books, but sometimes we add more. Read More
The prudent mariner Published on February 13, 2024February 12, 2024 by fivecolorssandt@icloud.com The ways of the sea Our navigator realizes that there’s always more to learn. Read More
Aldehydes and ketones Published on February 6, 2024February 4, 2024 by fivecolorssandt@icloud.com The road not taken Our tutor considers past alternatives. Read More
Three dimensions are hard Published on January 30, 2024January 28, 2024 by fivecolorssandt@icloud.com Two is easy, four is elegant Sometimes the more sophisticated stuff is easier. Read More
Deficient optics Published on January 23, 2024January 19, 2024 by fivecolorssandt@icloud.com Fixing it in post The human eye is not a great imaging system. Read More
Choosing classes (II) Published on January 16, 2024January 14, 2024 by fivecolorssandt@icloud.com Predicting the future If you had to do High School all over again, what classes would you take? Read More
Choosing classes (I) Published on January 9, 2024January 7, 2024 by fivecolorssandt@icloud.com Supply and demand Choosing next year’s classes can be a puzzle for High School students. Read More
Difficult meters Published on December 26, 2023December 26, 2023 by fivecolorssandt@icloud.com On poetry Can anyone write a poem? Read More
The last novel Published on December 19, 2023December 18, 2023 by fivecolorssandt@icloud.com Favorite authors When do you finish, if there’s no prospect of more? Read More
Still behind Published on December 12, 2023December 11, 2023 by fivecolorssandt@icloud.com A fragile system? Teachers are still seeing the effects of the COVID lockdown. Why? Read More