Category Archives: teaching

Order of operations considered harmful

[The title is a half-joking reference to Edsger Dijkstra’s classic paper, Go To Statement Considered Harmful; see here for more context.] Everyone is probably familiar with the so-called “order of operations”, which is a collection of rules that reflect conventions … Continue reading

Posted in arithmetic, teaching | Tagged , , , , , , | 7 Comments

Games with factorization diagram cards

Since I published a deck of factorization diagram cards last September, a few teachers have picked up copies of the cards and started using them with their students. I’ve started collecting ideas for games you can play using the cards, … Continue reading

Posted in arithmetic, counting, games, pattern, pictures, primes, teaching | Tagged , , , , , | 4 Comments

Factorization diagram cards are here!

It’s been a long process, but factorization diagram cards are finally available for purchase! If you just want to purchase a set right this minute, then click the above link! If you want to learn more, keep reading. History As … Continue reading

Posted in arithmetic, counting, pattern, pictures, primes, teaching | Tagged , , | 2 Comments

Factorization diagram card redesign: feedback welcome!

After getting a printed set of factorization diagram cards, I decided there were a few design tweaks I wanted to make. I’ve gone through a few iterations and I think they are definitely better now. Here are some representative samples … Continue reading

Posted in arithmetic, counting, pattern, pictures, primes, teaching | Tagged , , | 6 Comments

Factorization diagram cards!

I’ve designed a set of factorization diagram cards and had them actually printed. This is one of the first times in my life when I have caused Actual Physical Objects to be created (other than using a printer I guess) … Continue reading

Posted in arithmetic, counting, pattern, pictures, primes, teaching, video | Tagged , , | 5 Comments

Tiny Polka Dot

I’m really excited about Tiny Polka Dot, a Kickstarter project producing a deck of colorful, mathy cards especially for young children—along with a list of games to play with the cards. I have a four-year-old and I’m sure he is … Continue reading

Posted in games, pattern, pictures, teaching | Tagged , , ,

Book review: Lauren Ipsum

Lauren Ipsumstory by Carlos Bueno; illustrations by Ytaelena López I don’t quite remember how I first stumbled across the website for this little gem of a book, billing itself as “a story about computer science and other improbable things”. But … Continue reading

Posted in books, computation, review, teaching | Tagged , , , , , | 1 Comment