Yes, students have trouble with infinity. And with zero. The great James Propp has written an in-depth essay about conceptual and linguistic issues with infinity and zero. Concrete examples are always best. Propp offers eight ways in which a student… Read More ›
For some reason Flicka likes this excessively large box. Apparently she doesn’t understand that cats are supposed to sit in boxes that are slightly too small for them!
William is preparing for his upcoming 17th birthday by taking a power nap on his kitty couch to make sure that he remains cute enough.
Your local restaurants need your help! As you know, they operate on small profit margins, and the current prohibition on eat-in dining can destroy many a restaurant. So we’re trying to order take-out and delivery locally whenever possible. Last night… Read More ›
Cool new shirt (matching my trademark jacket), but… What”s wrong with this picture? (Thanks, Alison B., for noticing what I hadn’t noticed!)