Sunday, October 25, 2015

30 Days Hath September

There's a cool mental calculation hack I recently learned for this: If you open the calendar app on your phone or computer, the highest-numbered box along the bottom is equal to the number of days in the month!
Подробнее о "30 Days Hath September" →
Posted by at

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)