横河AAI841-H00 S2模拟输入/输出模块

横河AAI841-H00 S2模拟输入/输出模块

横河AAI841-H00 S2模拟输入/输出模块

张少民  13365909307

零件号:AAI841-H00
型号:AAI 841–模拟I/O模块(4至20 mA输入，4至20 mA输出，8通道输入/8通道输出，非隔离)

et’s say a student fails to turn something in. What grade should they receive? I have asked this question of a lot of teachers lately, and here are the most common answers I’ve gotten: “Zero.” “Nothing.” “-5.” “An F.” “A K.” What?

I’m currently in my 19th year of teaching, and my answer to this question has evolved significantly over time. I was a staunch “Give them a zero. I don’t give points for doing nothing. You earn them.” However, in the past two years, my answer has evolved to include some nuance that I believe is more mathematically fair to students and allows for redemption.

UNDERSTAND THE GRADE BAND REALITY

I’m a math teacher and I love number lines. So what does this have to do with grades? Let’s envision a number line with the traditional 0–100 grade scale on it. Way over on the right would be the A grade band (90–100). The B band would be from 80 to 90, a C from 70 to 80, and a D from 60 to 70.