Old projects Published on April 16, 2024April 15, 2024 by fivecolorssandt@icloud.com A plea for documentation We pull out something from the archives. Read More
The answers Published on April 2, 2024March 31, 2024 by fivecolorssandt@icloud.com and explanations We present the answers to last week’s conundrums. Read More
Breadcrumbs Published on March 5, 2024March 4, 2024 by fivecolorssandt@icloud.com Not even suggestions Our tutor’s activities sometimes depart from the syllabus. 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
Rereading Published on August 1, 2023July 31, 2023 by fivecolorssandt@icloud.com and relearning We go back to some old textbooks. Read More
Factoring Published on February 14, 2023February 12, 2023 by fivecolorssandt@icloud.com Four ways Our tutor is faced with too many alternatives. Read More
Liquids in space? Published on September 13, 2022September 11, 2022 by fivecolorssandt@icloud.com Chemical calculations An offhand comment led to a set of hybrid calculations. 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
Changing the world, or not Published on September 28, 2021September 26, 2021 by fivecolorssandt@icloud.com Recording sight and sound Some inventions change society; others don’t. Why? 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
