Friday, August 27, 2010

COSMIC VOYAGE

Biology students will be viewing a 36-minute IMAX video in class and completing a worksheet based on part of the video. The film, 'Cosmic Voyage', was made in 1996 for the Smithsonian Institute and was clearly inspired by a classic science education film called 'Powers of Ten', originally produced in 1977 by the husband-and-wife team of Rae and Charles Eames.

'Cosmic Voyage' approaches the idea of using the metric system, which is based on powers of ten, to explore the question: "What is really large, and really small?" The film first zooms out from an acrobat's ring in St. Mark's Square in Venice, the place where Galileo first trained his telescope on the heavens.


Through 23 powers of ten, we leave first the Earth, then our solar system, then the Milky Way Galaxy behind, until we reach the limit of modern astronomy, where we can see images from about 13 billion years past.


Reversing course, the video then zooms in on drop of water in the Dutch town of Delft, where Antonie Van Leuuwenhoek first trained his early microscope to discover the hidden world of microbes.



As we zoom in on a paramecium, we penetrate its cell nucleus, then zoom in on a molecule of DNA.


Within that molecule is a carbon atom, and the world within that atom is mostly empty space! Within the atom, the atomic nucleus contains virtually all of an atom's mass, made of particles called protons and neutrons. These, in turn, are formed from even smaller particles called quarks.

The film continues with a discussion of the search for a fundamental theory in physics through the use of particle accelerators like Fermilab, along with an overview of the likely "recent" events that led to our sun, our solar system, the Earth and life itself.

Here, presented on YouTube, is the first segment (Chapter 1) of the film who wish to review the material or share it with others. As the narrator (Morgan Freeman) intones, 'we are all travelers on a voyage of discovery!' Chapter 2, Chapter 3 and Chapter 4 can be assessed at YouTube directly or by clicking on the hyperlinks



Thursday, August 26, 2010

POWER POINT NOTES: THE NATURE OF SCIENCE


Students! Here is the Power Point for the notes on 'The Nature of Science'. You will receive a Lecture Guide based on these Notes sometime this week! If you don't have Power Point on your computer, don't worry . . . you can download a free program, Power Point Viewer, to see the notes!

THE NATURE OF SCIENCE

Friday, August 20, 2010

POWER POINT NOTES: THE NATURE OF SCIENCE








Students! Here is the Power Point for the notes on 'The Nature of Science'. You will receive a Lecture Guide based on these Notes sometime this week! If you don't have Power Point on your computer, don't worry . . . you can download a free program, Power Point Viewer, to see the notes!



KEEP IN MIND...this year, in Mr. Hatfield's Classes, we will try to reduce the amount of class time spent taking notes. There are dozens of standards to cover, hundreds of vocabulary terms and other items to master. We need to decrease the amount of time spent in lecture so students can have more time to do activities. Remember: we want to engage as many different parts of the brain as possible, and to do that, we need to have more time to do things other than notes.










At the same time, your Cornell Notes must be complete (all the notes, original questions and comments in the margins, your name/date/course on every page, and summaries of major sections of notes). Therefore, it is the student's responsibility to download and complete any notes that they were not able to finish in class!!






THE NATURE OF SCIENCE

Thursday, August 19, 2010

POWER POINT: INTRODUCTION TO BIOLOGY


You can download the first set of notes covering Rules, Policies, Procedures and Steps at this link.

Sunday, June 27, 2010

MY SUMMER VACATION


As some students may be aware, I am planning on taking coursework in the Galapagos Islands in July. This is part of a program in which I will earn units in both the Geology and Biology of the Galapagos. Beyond making what is in effect the biological equivalent of a pilgrimage, I am hoping that what I see and experience will make me a more effective instructor in Biology, particularly as regarding evolution and natural selection.

I don't intend to stop there, however. I want to be able to document my voyage of discovery and bring into the classroom---not just my own future classes, but to the Central Valley as a whole.



After all, evolution isn't something
that's confined to exotic locations!

Isolating mechanisms, changing environments, patterns of selection and diversification are going on throughout the world, including the Central Valley. I want to bring an awareness of what's happening right here to my students, so that they can see evolution at work in their parks, their orchards, their forests and even their urban settings.

What , for example, could possibly be more motivating to students that to learn that real-life examples of natural selection in action are be studied just a few miles away from where I teach, in Millerton Lake?



Photo: Katie Peichel, Pam Colosimo, and David Kingsley (HHMI and Stanford University)

Outstanding research by David Kingsley and his associates has documented how genetic changes in stickleback fish in different environments have led to recent speciation events in populations that became isolated when global sea levels fell during the last Ice Age. Placed in refugia that lacked the predators experienced by marine populations, the pressures to maintain the dorsal spines that give these fish their name was relaxed, and the energetic costs of maintaining these spines asserted themselves.

That's the sort of connection I want to help foster, but to make that connection especially vivid we need to relate our surroundings to the familiar example of the Galapagos, the "workshop of Nature" found in our textbooks. Doing that means creating specific content, hopefully vivid and memorable, that brings the Galapagos to the Valley---so that we can then discover the connection, in effect Finding OUR Galapagos.

Tuesday, June 1, 2010

FINAL ESSAY DUE SOON: INSTRUCTOR CONCERNED

OK!

Dear Parent or Guardian:

Many students have yet to submit their Final Essay in Biology.


This is very serious, because the assignment is so heavily-weighted that failure to attempt it will almost certainly drop students at least one letter grade and may well lead to failing the course. Please make sure your student attempts this assignment.

Other students have submitted an earlier draft, but (as you might imagine) such drafts are usually not good enough to earn a passing grade the first time through. One of the objectives of this assignment, in fact, is to force students to rewrite. Please encourage your student to take advantage of the opportunity to rewrite, and thus improve their grade.

As you might guess, grading student essays is very time-consuming. As a result, I need to impose a cutoff for final draft submission:

Tuesday, June 8th, 4:00 PM

No drafts will be accepted after this date.

More information about this assignment is available on the class blog here:

http://biologyknights.blogspot.com/2010/05/down-home-stretch.html

Thursday, May 20, 2010

POWER POINT: BEYOND DARWIN

BEYOND DARWIN!

Here's a novel thought: instead of being taught as mindless, slavish dogma, evolutionary biologists have been busy in the last 150 years. They've been testing, retesting, modifying and in some cases rejecting aspects of Darwin's theory. This Power Point explains some of the major innovations, which (by the way) are all in the textbook:


Students who need to download the Power Point to complete their notes, and the Lecture Guide based on it, can do so here.


We've just finished these notes, and many of these ideas are important in some of the potential essay topics that students should already be working on, so those students especially will want to get up to speed. Students will receive a Lecture Guide based upon these notes TODAY!

BEYOND DARWIN