285

285

The number of students who have earned 20/20 on semester iClicker pointage: 285, out of 501 students.

Very nice for your grades!

Best three midterms

I just created a new row in you Grades page, "Best three midterms" out of a possible 120 points.

This is a large fraction of your semester grade, going into the final exam. It is good, because 92% of the class made it to all four midterms and have the benefit of dropping one stinky and dinky midterm score. Nice.

Other big pieces of semester grade -- HW and clicking -- are still in progress. I will be trying to update clicking data today, until my brain melts or mental discombobulational chaos sets in.

Side note: 90/120 or more would be a letter grade "B" average.

Schedule for this week

Schedule for this week:

Monday, Nov. 25 Lecture 41 Finish concepts from Ch. 17 on rocks and minerals, begin Ch. 24 concepts on the oceans of Earth. Regular clicker work in class. HW 25 assignment, due 11/27

Wednesday, Nov. 27 Lecture 42 Finish Ch. 24 concepts on the oceans of Earth. Regular clicker work in class. HW 26 assignment, due 12/2 Chuck Norris Mega-Review HW assignment, due on 12/2.

Office hours cancelled today only

I have to cancel office hours this morning. I am taking a family member to the hospital.

Red hydrogen

From APOD, Astronomy Picture of the Day

This is an interesting view of an astronomical nebula, the Veil Nebula, loaded with hydrogen (red).

Here is a nifty reference for the spectra of other elements: Spectra of Gas Discharges by Joachim Köppen, Strasbourg/Illkirch/Kiel 2007.