Self-tutoring about Excel: the tutor makes an observation. The other day, in a mad hurry, I was working on a spreadsheet. As so often happens, I needed more columns between two I’d made. No problem: right click, then Insert, which …
Self-tutoring about the weather: the tutor mentions the cold last night. Yesterday evening I left the house to get hot dog buns at the nearby store. I always walk there: it’s less than 1 km away. As I prepared to …
Self-tutoring about past events: the tutor reflects… As I mention in yesterday’s post, exploring the forest was important to me as a kid. I had a little motorbike, of course, so venturing miles away was easy. One time a friend …
Self-tutoring about situations in the past: the tutor reflects. When I was 12 I got a motorbike – a little Honda 50. It was old, but after a trip to the shop, ran fine. Behind our house was land that …
Self-tutoring about drugs in the environment: the tutor begins. Years ago I heard of prescription drugs measurably present in at least one urban water supply. I was surprised, and wondered about its extent. It turns out that the FDA would …
Self-tutoring about Canadian rivers: the tutor mentions the Peace River. The Peace River, from its beginnings, is 1923 km long. It’s named the Peace as it leaves Williston Lake in northeastern BC; thence it flows east. In BC, Farrell Creek …
Self-tutoring about thermodynamics and weather: the tutor mentions adiabatic. Adiabatic refers to the concept that a system can heat or cool without heat flow between itself and the environment. In such a case, the exchange is of energy. If the …
Self-tutoring about snow and ice on mountains: the tutor wonders about the height of freezing. The temperature at height is approximated by T=Tsea_level – 0.0065h, h in metres, T in °C. In a tropical place let’s imagine a sea-level temp …
Self-tutoring about provincial identity: the tutor mentions an issue about the noble Steller’s jay. I recently realized that the Steller’s jay is our provincial bird here in BC. To quote John Lennon, “I ain’t too surprised.” After moving to BC …
Self-tutoring about the Earth: the tutor begins about its surface temperature. Nasa suggests that Earth’s average surface temperature is 15.0°C, while space.com seems to suggest it’s 14.9°C.