![](https://news.cs.washington.edu/wp-content/uploads/2018/07/IMG_9950-768x1024.jpg)
Tom Cortina (CMU faculty and CS4HS instructor) shows the result of precisely following the teachers’ algorithm for making a PB&J sandwich!
Last week marked the Allen School’s annual workshop for middle school and upper school teachers of math and science – CS4HS. Learn more here. And plan to join us next year!