Tutoring math, you realize that infinite series can be hard to visualize. The tutor offers perspective. An infinite series is a sum of terms that never end. An example is a repeating decimal, such as 0.2222222….., which means 0.2222222…. = …

Math: ideas about infinity: how an infinite series can have a finite sum Read more »

Tagged with:

Tutoring math, you see the pencils students use. The tutor makes some observations. I’m a fan of mechanical pencils: You needn’t sharpen them. One will last for weeks, months, or even longer, depending on usage. You can retract the lead …

School supplies: mechanical pencils vs wooden ones Read more »

Tagged with: ,

Tutoring, you’re interested in education. The tutor brings up two business titans from the late ’90s/2000s: What were their first degrees? In their time, I followed both Carly Fiorina (CEO, Hewlett-Packard, 1999-2005) and Martha Stewart through the headlines. Both were …

Business: what do Carly Fiorina and Martha Stewart have in common? Read more »

Tagged with: ,