General Science
General Chemistry Topics
Ebooks have hit Kindles, ipods and other devices in many areas, including education. There are lots of programs out there for young children, but fewer for higher education. For example in teaching freshman chemistry at McGill, we are high tech. We have huge screens; power point slides; internet access (my son Skyped me once when I was teaching 600 students, much to their amusement); I can pull up Wikipedia, or any other programs, (I like the phet Physics simulations); we have clickers (so the students can vote on questions asked in class), and the whole kit and caboodle is recorded so the students do not even have to attend the lectures.
Yet they have to buy a text book which costs about US$175 (In Canada). In our two classes there are 1100 students. Multiply by the average of 5 courses students usually take and you can see that books are a major expense. And this is just one class. Do the math, and students shell out a lot.
Then there are the tons of trees that are sacrificed. Our text for freshman chemistry weighs 3 kg (6.6 lbs)! Money-conscious students usually sell their texts and the second hand market blossoms. After about three years, the book is down to $50 or so and the book companies start to lose their market. If it were a regular book, then when a print edition runs out more are printed if needed, but not in the text book market. Although new editions appear with claims of new improvements and corrections, the dominant reason for a new edition is to get the market back. If the book was selling like hot cakes, then new editions are rarely contemplated.
You cannot copy protect hard copy.
The text that the team teaching our course chose is General Chemistry by Petrucci et al and is in it 10th edition! The only changes I noted from the 9th were the addition of a few more problems. The general rule to justify a new edition is that it should have about 20% new content. This is rarely the case.
Companies desperate to hold onto their market share, inundate teachers with the plethora of “resources”, such as a web site (usually not good and not used much by students anyway); other multimedia; solution manuals; and study guides. These are considered a necessary burden by text book companies, but they jack up the price.
It should not be this way and today, with computer technology, the heavy environmentally unfriendly hard copy text books should be rejected by teachers in favour of ebooks, if available.
The developing world needs these books too, but cannot afford them, so they ignore copyrights and make them out of cheap paper and sell them for a few dollars.
I believe it is long overdue to do away with hard copy text books altogether, along with their high cost, and adopt ebooks.
Think of the advantages: no paper, nothing to ship, can be updated so users always have the latest edition, integrated into the internet, easy to copy protect, and can be sold for a fraction of the price of hard copy. No resale market.
Moreover the usual hard copy text contains way too much material for a two semester course–with about a thousand pages. Ebooks can readily be broken up into modules which are focused on the material needed for a course. As one of the authors of Physical Chemistry by Laidler Meiser and me, we got the copyright from Houghton Mifflin and have made it into a copy protected pdf with built in multimedia popups, and an extensive free solution manual on-line. Although the full ebook is available, there are six modules covering thermo, electrochem, kinetics, quantum, stat. mech., and solids and liquids. The starting price is only $14.99, (a 5 month license) a far cry from $150 plus. A semester course is usually four months, so a 5 month license fits the needs of many students.
Copy protection is essential and we have developed an MCHPDF viewer that takes any number of books in pdf format and secures them. That is the PDF viewer acts like a library of copy protected ebooks, with license expiry and updates built in. Give us your pdf ebook and we will give you royalties much greater than anything offered by a text book company.
However one of the most exciting aspects of ebooks is to reach the developing world. Many just cannot afford paper. Even if individuals cannot afford to buy their own copy, governments, organisations and universities can instead obtain a fixed number of licenses at a reasonable cost, making the ebooks available to millions of people.
Today it is natural for students to read and study from a computer. When I compare ebooks with hard copy, I can find nothing to favour the latter over the former. What’s your take on this?
I thought I would expand a bit more on my recent post on stress at exam time. The transition from high school to university is both exciting and challenging.
Likely you got through high school quite easily; memorized a lot; and/or crammed at the last minute, yet still did well. University is not like that. You have to work consistently throughout a course, keep up, and not leave your study to the last minute. You have to prepare for a university course like a runner prepares for a race. Since I teach physical chemistry, I will try to bring together some things from those courses that I hope will help students hone their study habits. You have to teach yourself to learn.
Ask yourself “Why science?”. Here are some possible reasons:
It is your life and your education. Choose the program you want, not what others tell you to take. Don’t ignore advice but think what you want before you make choices. You are over 18 and an adult.
When students do not do well on mid-terms, they often think they are not smart enough for university. If you did well in high school and passed the university entrance requirements, you have the brains and are capable. So relax and trust yourself. All you need to do is know how to keep that material in your head.
If you have a system that works for you, don’t change it. On the other hand, maybe some of the suggestions here might help.
Freshman classes are usually large and the exams are often multiple-choice and you might not be used to them. I will say a few words about multiple choice exams further on.
A “course” is a “path” through the material which your prof. decides is important and attempts to teach you. Exams come from that material, so listen to him/her. You need to organize that material, see how it fits in the big picture and manage your time properly: that is, you must be efficient.
You do not have to study all the time. University is a lot more than passing exams and good grades. You meet new people and develop socially, you join clubs that interest you, and you go out and enjoy yourself. After four years, you have the ability to think critically and the intellectual resources for a good and rewarding career.
Here are some suggestions.
If you keep up with your courses, then studying for finals is much easier because all you need to do is review and revise material you have already learned.
Know the material the Prof. emphasizes.
Allot time to courses. Some take up more time, but do not neglect the easier courses.
When studying, a lot of time is spent trying to get the material into your head, but not a lot of time is devoted to getting it out. Exams ask you to get it out.
First, do not be a passive learner. Children watching Sesame Street learn passively and this is not enough at the university level. Writing out notes and ideas is dynamic and helps to consolidate them. Articulating the material out loud helps a lot, so discuss. Ask your prof or teaching assistant questions, they really are happy to answer. Many students come to me and say. “I know this is a stupid question but…” Students do not ask stupid questions. If you do not understand something, make sure you get it because it is likely that gem of knowledge will be on the exam.
Discuss ideas with your fellow students. Working in a group is an example of peer learning. It is effective because you talk and discuss the more difficult concepts without the intimidation of your prof. You can give your views and hear the ideas of others.
At exam time, reduce your knowledge into one or two pages. Each sentence corresponds to a summary of a topic which in your mind, those you have decided are good candidates for questions.
Studies show that 1 hour of study when you are fresh in the morning is equal to 1.5 hours of study in the evening. You should do easy things at night. Memorization is best done before going to sleep. Do the challenging things in the day time.
Each of us is different, but every 50 minutes or so take a break. Concentration span can also be extended by changing topics. Ensure you have privacy when you need it. Turn off your cell phone, close the door and leave FaceBook alone while studying.
Again, studying is like preparing for a race. You do not only run. You look after your body. Get enough sleep. You can:
A few pointers:
Good luck.
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