Tutoring biology, respiration is a topic. The tutor compares aerobic with anaerobic. Respiration, on a cellular level, means reacting a fuel (typically glucose) to produce energy. If the reaction depends on oxygen, it’s aerobic; if not, then it’s anaerobic. Curiously, …
Tutoring biology, the concept of gene therapy arises. The tutor gives a top-down idea. Gene therapy means changing the genetic profile of an organism in order to promote health. Its motivation is generally grounded in one or more goals: Replacing …
Self-tutoring about gardening: the tutor explores the relationship with grasshoppers. It’s been a very active year for crickets (I hear them booming right now) and grasshoppers. This post, I am concentrating on grasshoppers. Noticing so many this year, I’ve been …
Tutoring chemistry, definitions and the ideas behind them are important. The tutor compares suspension with dispersion. Suspensions and dispersions are both mixtures in which one phase contains and separates a less numerous one. One difference between them is that with …
Tutoring calculus, trig identities can give choices when performing derivatives. The tutor mentions an example. Example: find derivative of y=sinxcosx Solution method 1: product rule (see my post here.) y’ = (sinx)’cosx + sinx(cosx)’ = cosxcosx – sinxsinx = (cosx)^2 …
Calculus: trig derivative: product rule or identity substitution? Read more »
Self-tutoring about autos: the tutor mentions a question he researched today about spare tires. Inspecting a car, I found its spare tire to be at about half the pressure of its driving tires. It was so low I wondered if …
Autos: should a spare be kept at driving pressure? Read more »
Self-tutoring about food and nutrition: the tutor mentions carrot tops. This year a few carrots have arrived in the garden. My wife likes freshly-harvested carrots, so I pulled a few from the ground and brought them in for her. What …
Self-tutoring about home computer situations: the tutor mentions one YouTuber’s commentary. I have much news to convey – too much for one post. I’ve decided to start with a topic I’ve long wondered about: the Windows registry. My anti-virus protection …
Self-tutoring about backyard animals: the tutor mentions a welcome encounter. Some years I’ve seen numerous garter snakes in the yard; I think the record is five, from many years ago. In recent years I’ve seen less – none at all …
Tutoring biology (aka life science), one encounters the cell cycle. The tutor summarizes it. The cell cycle is a top-down view of how a cell spends its time. It’s divided into two main phases, interphase (preparing to divide) and mitosis …