Lock Down Interrupts Instruction

As hard as we tried, the constant interruption of the intercom (beeps and messages) really made instruction during sixth period difficult today. We managed to survive our security drill, and everyone was able to get home safely, but I am not so sure we all understood today's lesson. We will revisit this again on Thursday, but hopefully without the interruptions!

Tonight's Homework: Complete the rest of the problems on Worksheet 11.5B (19 - 29).