Grading: Two Thoughts

We started a new unit and there hasn't been much to grade.  I am itching to know what the students know.

Grading papers helps me in two ways.  First, it gives me an opportunity to see what the students are learning and, secondly, it's another way to communicate with students.  Grading 186 papers is difficult work, but thinking about these two things keeps the grading engaging.

What do You Know?

I have determined that informing students to the purpose of an assignment helps them produce work that is complete and thorough.  Over the past two weeks I have stressed that assignments are a tool for me to know what you know; if you don't write it down, I don't know that you know the material.

Over the course of grading I can find weaknesses in the students' understandings and address them the next day.  I can also see where the students are excelling or what topics interest them the most.  Knowing students' strengths and weaknesses helps drive future instruction.

Communication

Grading is also a time to communicate back to students.  It takes a bit longer, but I want to make comments that will help students.  Even if I don't mark points off, I want them to know how they can do better work.  I may refine my ideas on grading, but it seems like the students deserve thoughtful comments on things they spent significant time on.  Unless students are given time to research stuff they got wrong, checks and "-1" next to answers doesn't communicate much to a student.


Today is a good day.  Students are turning in their first assignments and I am looking forward to grading them.

NetLogo - Technology and Models

For the past week we have been learning about Ecology.  I have a number of old resources that I have been asked to use in the classroom.  With the recent talk of NGSS and STEM I was looking for ways to integrate some sort of meaningful technology into the classroom.

As I was poking through several videos on the Bozeman Science website, Paul Anderson briefly mentioned NetLogo as resource he uses in his classroom.  NetLogo is a piece of software that creates computer models of all sorts of scientific or statistical situations.  The software helps model everything from basic traffic patterns to game theory.  I found a model that helps visualize relationships between predator and prey and I was able to use it in class with great success.

The need in the classroom:

1. To quickly visualize the relationship between predator and prey over generations.
2. To quickly visualize the results of messing with the balance of predator/prey relationships.
3. To visualize and analyze the results of the corresponding data.

Gathering this type of data to has been a lengthy process in the past.  It ends up usually being too general or too painstakingly lengthy to make the exercise meaningful.  And, generating data where one of the variables changed is hypothetical and equally time-consuming.  NetLogo provided a way to quickly generate data for the situations we were looking at.

The Old Way.  *sigh*

Downloading and installing NetLogo was pretty simple.  It's a Java based program so it can be installed almost anywhere and I was impressed that it ran so smoothly on my lightweight laptop.

Here's a screenshot of the Wolf Sheep Predation model.

Shiny!

Now, here's what I'm most excited about.  The model produced data that really helped scaffold good questions.  The students were interested in the modeling and were mostly impressed at how fast data could be generated.  The data allowed me to assess the students' understanding of the principles we've been talking about in the last 4 class periods.

In each class we ran a basic simulation and we talked about the ebb and flow of both predator and prey but we were also able to play with the variables.  In one instance we had a situation where the number of sheep dipped too low and the wolves went extinct within our digital biome.  I got a reaction from a lot of the students!  I was surprised and very excited at the empathy!

After the demonstration we moved on to other classwork, but I continued to get questions about the predator/prey relationships, what-if questions, and questions about running the software themselves.  For a small investment of classroom time and an hour of my personal time I got quite a satisfying result.

Squeezing In Points: Academic Purgatory

Here's a note for Future Dan: better planning reduces student stress.

This week will be a stressful week for the students.  5 Week Grades are due on Thursday, and there is a pressure to finish the unit on evolution before starting the next 5-week session.  The pressure is only coming from a planning calendar loosely based on the effectively defunct California Science Standards.

This week: The Perfect Storm:

1. Tuesday: Quiz on Chapter 17
2. Wednesday: Essay Exam on Unit 5 - Evolution
3. Thursday: Multiple Choice Exam on Unit 5 - Evolution

I am growing increasingly skeptical of the massive unit exam typical of science courses.  The ability to assess the students' higher level learning in an intense examination in 90 minutes seems counter-productive.  Unit exams seems to promote cramming and really hinder long-term understanding.

Unit exams may have their place, but they should be more application, synthesis, or evaluation-type assessments.  

I would like to find or develop a system where there's a capstone assignment for the unit rather than a massive exam.  The capstone project would be supported by better assessments during lesson delivery. All assessments would involve an activity or a section of reading from something that piques students' interests. 

Better planning before a unit built on better assessment types can avoid cramming and the test anxiety common with antique testing methods.  Sadly, these methods are perpetuated by the always dangerous mindset of "that's always the way we've done it."

Sophomore Registration: Mixed Thoughts

Today's lesson allowed students a great deal of flexibility.  Most needed to finish gathering data for a lab, others worked on the analysis questions, and the rest worked on other homework.

Today was also sophomore registration.  This proved to be an unexpected distraction, but it was a great opportunity to talk to and learn about my students.  They are beginning to wrestle with how they're going to get to college.

Student teaching in a freshman honors biology class means most of the students are very driven.  Next year looms with their first AP courses sprinkled within a sea of honors classes.  I am firmly convinced that students need to challenge themselves and take as many honors and AP classes as they can manage. The students themselves are very driven to take the advanced courses, but sadly, are unclear as to the purpose.  Sure, to get into college; everyone knows that.  Then what?  None of the student I talked with knew what they wanted to do when they grew up.

A good college, a good career, a good retirement, and a good twilight of one's life is all very nice, but, for students, these are very distant and impersonal.

Students have time.  Rather than give advice on what will get them into a better college, I recommended things that would help them appreciate the world around them.  And, if that means taking a bunch of AP and honors class, then they should do it.  Sparking student interest seems more valuable than leaning on them to follow a particular career path or get into an elite college.