Interactions, Issue 9, November 1995

The Newsletter of the SciencePlus Teachers Network

Linking Teachers with Teachers

In this issue:

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THE FIRST WORD

It seems that the First Word over the past two years has had a similar theme: the difficult circumstances under which our science teachers work. Certainly this year brings no relief in sight. We are still deep in the economic quagmire; early retirements have meant the departure of many, taking their experience with them; cutbacks have left many teachers, new and experienced, teaching SciencePlus for the first time, in most cases without the guidance and support of full-time consultants. If ever there was a time for teachers to network, it is NOW!

Since its inception in 1991, this newsletter has been a means of bringing SP teachers closer together, and has provided a medium for exchange of ideas. In its traditional format, how-ever, its impact has necessarily been limited. The advent of our new SPTN Internet address will give teachers the opportunity to have their questions and concerns dealt with immediately and, most importantly, by other teachers in similar situations, anywhere in the world. Successes and failures can be shared while they are fresh in the mind - not restricted by the twice yearly publishing dates.

More and more schools and individuals are getting online. In this issue (p. 5), you will find out how to reach us, and what to expect when you get there, but, as in all networking, the success of the electronic version will depend on you. Get involved - you'll get more back than you give.


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POINTS TO PONDER

It is easy, in these difficult times, to forget why you are doing this job; in fact, you probably ask yourself that same question several times a day! In the latest issue of "The Communicator", (our sister newsletter in the U.S.), we were delighted to come across a contribution from Marcia K. McNutt, Ph.D. which we felt was worth sharing. Dr. McNutt is a teacher at MIT, and these comments are taken from her keynote speech at the HRW Summer Science Leadership Institute, held June 29-July 2 at the University of Iowa.

Teaching Science: "The Best Job in the Whole World"

Today I get a chance to express my appreciation to the teachers of science, undoubtedly the toughest job in secondary education.

You deal daily with the misconception on the part of students, and perhaps even their parents, that learning science is "hard" and only accessible to the class nerds.

Furthermore, compared to other subjects such as English, algebra, or ancient history, the content of science is far more dynamic, since important discoveries continue to be made in the natural and life sciences. Thus you must be students of science as well as teachers of science.

Finally, science is more a way of viewing the world than it is a body of knowledge. It is therefore not easily learned through lectures or reading textbooks. And, as you all know, it takes a history teacher far less preparation time to dust off last year's notes than it does for each of you to set up a demonstration on the principle of levers.

Nevertheless, you all persist in this occupation, and it certainly isn't for the salary. I hope it's because you recognize that a solid education in science is an essential element for all citizens of the 21st century. And I hope that it is because, every once in a while, you come across a student for whom your science class is simply the most wonderful, mind-expanding experience ever encountered. I was one of these students 30 years ago - one who was sufficiently motivated by my physics class to choose a career in science. When new acquaintances ask me what I do, I am happy to respond that I have the best job in the whole world. I never cease to be amazed that someone will actually pay me to be curious and try to figure out the workings of the Earth around me.

It occurs to me that your success will not be measured by the number of your students that go on to become MIT professors, but rather by your success in opening the minds and broadening the perspectives of the general population.

Our education does not end the day we graduate. Science teaches us that knowledge must be constantly updated, and we must keep our eyes open and our senses sharp.


A Thought

"Science is built of facts, as a house is built of stone; but an accumulation of facts is no more a science than a heap of stones is a house."

Henri Poincaré


SCIENCEPLUS WORLDWIDE

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Pen-Pals Wanted!

While at the 1995 SciencePlus Iowa Summer Leadership Institute, teacher Chris Hooker, of Kirkwood, Missouri, came upon an old but exciting idea that takes advantage of the way students love to communicate. While making friends with science teachers from all over the U. S., Chris thought how positive it would be if his students had access to the students of the many teachers he had met. Why not form a student pen-pal network? Such a network would allow the students of teachers who use SciencePlus to correspond and learn about topics, issues, cultures, geographic areas, and how science is being taught in other classrooms. The potential for students to exchange ideas, as well as lesson-specific data, is tremendous.

Teachers at the Institute were enthusiastic and, as a result, an exploratory pen-pal network has been set up, including SciencePlus classes from 21 states. Chris would welcome pen-pals from the Atlantic Provinces! Teachers who are interested in joining their classrooms to the network can contact Chris Hooker at N. Kirkwood Middle School, Kirkwood, Missouri USA 63122

If any of you do get linked up, we'd love to hear the outcome.

The Travellers

At time of publication, three of our authors, Nan Armour, Muriel Smyth, and Alan Moore, will be on their way back to Canada from the other side of the world. Their mission (and they did choose to accept it!) was to present a workshop, "A Curriculum Model for Secondary Science - a Canadian Perspective" at the Australian Science Teachers' Association Conference in Brisbane, September 24th to 29th. Now that SP is being used in at least one school district in EVERY state in the U.S., it is a fair bet that their presentation was greeted with a lot of interest.

Following the conference, Muriel toured other Australian locations, while Nan & Alan continued on the Papua New Guinea, Singapore, Malaysia, Thailand and Hong Kong; rotten work, but somebody had to do it!

Bright Idea From South of the Border

Victor Roos of Floyds Knobs, Indiana, hit upon an new twist to an existing activity, and we’re passing it along. His students had just completed the paper chromatography activity (SP1- Solutions), and decided to extend it into a tie-dye shirt activity. Instead of using traditional tie-dying technique, where the shirt is tied in knots, or bunched with rubber bands, and then dipped into a sinkful of dye, Ross' students let the colours run up the shirt, just like blotting paper, and then stopped the capillary action halfway. This proved VERY popular with his students.

SciencePlus Around the World

SciencePlus is used in the following countries:

Abu Dhabi, Austria, Bahamas, Bahrain, Bermuda, Brazil, Canada, China, Colombia, Egypt, England, Finland, Guam, Guatemala, Hong Kong, Iran, Ireland, Italy, Japan, Malaysia, Oman, Panama, Peru, Philippines, Puerto Rico, Saudi Arabia, South Korea, Spain, Taiwan, Thailand, U.S. Virgin Islands, U.A.R. U.S.A., Western Samoa.


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LANGUAGE ARTS - SURVIVAL GUIDE

SciencePlus uses language tasks extensively as a way to have students reflect, consolidate ideas and demonstrate understanding, but for many of us, our last creative writing task was completed in High School! What to do? Paula MacInnis, of Eastern Passage Junior High, has recommended an excellent resource for language arts activities, covering such topics as the writing process itself, writing poetry, journals, research reports, descriptive essays, reading critically, verbal communication, and much, much more. She claims it should be on every SciencePlus teacher's desk!

The book is called "Language Arts Survival Guide" and you can get more information by writing to:

or call 1-800-567-3800


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WORLD'S STRONGEST MAGNET?

Imagine two half-inch magnetic discs so strong that they cannot be pulled apart! While browsing the Internet, I came across an ad from Arbor Scientific, who sell these neodymium magnets for $20 US per pair. Pricey, but might prove "attractive" to students of Magnetism & Electricity (SP2). If you are interested, their address is:


Jodi Robinson, of Prince Arthur Junior High School, Dartmouth, N.S. suggests:

If you have access to an "Elmo/TV" apparatus, it can be used effectively to observe the movement of small organisms such as worms, spiders, insects etc. You can also use it to observe stimulus/response in an earthworm. (SP1 - Living Things)


Another Thought

"Equipped with his five senses, man explores the universe around him and calls the adventure 'science'". Edwin Powell


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CONFERENCES

Summer Institute '95

This past summer, approx. 40 people were participants in four very intense, yet relaxed days at Mount Allison University, learning to be better science teachers. With reductions in funding, a corresponding increase in contact time with students, and less time with colleagues, the Institute provide a rare opportunity to exchange ideas. Through group or individual work and our daily social gatherings, teachers were able to share and discuss what works and what doesn't, and have fun doing so! We were shown the importance of risk-taking and creativity, characteristics which, when demonstrated by teachers, are more easily recognized and adopted by students, empowering them in turn to become risk-takers and decision makers.

Workshop topics were many and varied: misconceptions students have about science, active learning strategies, graphic organizers, multi-disciplinary teaching etc. Each presentation suggested new approaches, as well as tips on how to incorporate these new concepts in the classroom.

We were shown alternative ways to monitor students progress, how to approach formative evaluation and writing portfolios, the idea of self-directed learning and evaluation, providing the student with more ownership and control of their own education. While these ideas were not new to me, the demonstration of the strategies involved in their implementation was helpful.

This "meeting of the minds" was truly productive, and the camaraderie and friendships that developed has enabled a network to be created where valuable sources of information in planning is available. The opportunity to work with SciencePlus authors was, for me, an added benefit.

In closing, the Science Institute has been valuable to me as an educator, to experience new ideas and to share these experiences with others. Whether singing a chorus of "Sunshine Mountain", solving a murder mystery, or dining on lobster and steak, all participants benefit from a strong and growing network of colleagues and friends. If you wish to start your summer vacation by refreshing your mind while relaxing it, AND have a find time in the process, consider the benefits to your students and to yourself, and join us.

Paul Keliher is project leader of Project Partnerships, a special program for at-risk students at Admiral Westphal Junior High School, Dartmouth, Nova Scotia.

NSTA CONFERENCE 1996

St. Louis, Missouri
Having had the opportunity to attend this conference in Anaheim two years ago, I can tell you it is an unforgettable experience. Next year's venue is St. Louis, Missouri, March 28 - 31. SPTN has in the past subsidized teachers wishing to attend this conference. If you are interested in attending, or perhaps even presenting in New Orleans in 1997, contact Nan Armour.

AST CONFERENCE 1995

Halifax, N. S.
Once again, SPTN welcomed teachers of SciencePlus to several workshops as part of the AST Conference, October 27. Numbers as a whole were down so we were happy to see a good turnout for the SPTN sessions on a variety of topics from lab strategies to murder mysteries. The Trading Post, as always, proved a popular venue, with 55 requests for resource materials which were mailed out to participants. Thanks as always to Ferne McCombe, the SPTN secretary, whose fool-proof system kept everything running smoothly! Thanks, too, to the presenters for the day: Margie Comeau, David DeVan, Paula MacInnis, Peter Kidd, Chuck McMillan, Linda Pattison, and Bill Reid.


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DISCOVERY CENTRE

The Discovery Centre will be offering workshops from January 3 to June 30, 1996, on Generators and Motors (Electricity SP3) and Chemical Tests (Chemical Change SP2) at its new location, 1593 Barrington Street. $2.00 per student.

For more details, call the Centre at 492-4422, the Science Hotline at 422-5960 or 1-800-565-7487.


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NEED IDEAS FOR SCIENCE FAIRS?

The Atlantic Provinces section of the American Industrial Hygiene Association is offering you an opportunity to introduce your students to the world of occupational hygiene. At the same time, the students could win $100 for their school and $50 for themselves. Nova Scotia science students are encouraged to submit projects based on Occupational Hygiene topics to their school science fair. Those projects may then be submitted to the:

Note: Deadline May 31, 1996

The Association will provide a list of topics, equipment can be borrowed (through the teacher), and the Association has volunteers in several areas of Nova Scotia who would be willing to act as mentors for students.


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DR. JEKYLL AND DR. SCHWEITZER: TWO VIEWS OF SCIENCE

The following article is adapted from a presentation made by the author at the SPTN Summer Institute held at Mount Allison University, July 1995.

We're not the only ones teaching science to our students! Images of science have been, and are being, portrayed on television, in the movies, and elsewhere. The purpose of this article is to expose two well- known (but inauthentic) images of science.

One of these, the Dr. Jekyll image, is that of the mad scientist working in a dungeon-lab with bubbling retorts, making fiendish scientific discoveries. The image is accompanied by a false description of scientific knowledge, e.g. monsters, secret potions, and werewolves - and experiments that should never have been performed.

Other messages are also carried, beneath the surface, through this "bad" science. For example, the image implicitly conveys that scientists are objective and that science is value-free; otherwise, scientists wouldn't do such things. However, everything we do (and do not do), is based on both personal knowledge and values. So the image of a scientist, who produces monsters from various cut-up body parts, is a poor one to portray to children. It also carries a deeper anti- educational message: that there is knowledge that is best not known. Furthermore, it turns a lot of kids away from science because it shows scientists as antisocial, unprincipled, unlovable nerds. What kid in his or her right mind would identify with that image?

The image plays on our legitimate fear. The fear is legitimate because scientific discovery constantly creates ethical dilemmas that outpace social mechanisms to deal with them, such as whether or not to continue the lives of foetuses with proven genetic abnormalities, to use dangerous new insecticides, or to build nuclear reactors. The fear can be discussed but the image cannot.

Another inauthentic image is Doctor Schweitzer: the scientist as benefactor of humanity, working unselfishly for the good of all living things. This image carries an equally false view of science. Called scientism, it is based on an assumption that science is unquestionably good. Scientific knowledge is portrayed as more important and valid than other forms of knowledge. We live in a scientistic society. It can be seen in the success of the "clinically-tested" headache pill commercial. Testing a medication in a clinic should not be the major basis upon which someone should decide whether to use it.. The scientistic view of the world is rosy - longer life spans and less disease (in the developed world) - but it often leaves out the pollution, disenfranchisement, alienation, and death sometimes caused by our use of science.

Both images portray naive images of what science is. They don't make clear that science is also a community of people working, like everyone else, towards their own ends. Scientists lobby for funding for "their" projects, and try to convince governments, large corporations and foundations that the work they are doing will benefit the organizations that are paying. Scientist are people trying to keep their jobs, progress in their careers, raise their families, and enjoy life, just like you and me.

Science is not being done by quiet bespectacled objective mild-mannered "men" who make the world a better place, nor by megalomaniacal evil geniuses - although there may be examples of both amongst their ranks. Science is being done by groups of people of every different background with all sorts of motives, open and hidden. The images don't explain why scientists, like anyone else, are not always objective and sometimes hold opinions counter to the evidence. They don't demonstrate that science is not truth, but what the community of scientists now believes it to be. Maybe we should be telling kids this when we teach them science.

[John Barnett was a science teacher in Oxford, N.S. for many years, and is presently completing his PhD thesis at York University, Toronto.]


Notice: Change of Information
Costs for a yearly subscription to the National Science Teachers Association are:

NSTS membership included.

To Order: send name and address, with money order in U.S. funds to:


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COMPUTER NEWS & VIEWS

SciencePlus on the Internet

The SciencePlus Teachers Network is electronic.

The Atlantic Science Curriculum Project has now established a Home Page and an SPTN Mailing List on the Internet. Located on Chebucto Community Net in Halifax, the ASCP World Wide Web page and the SPTN "email" mailing list lets anyone connected to the Internet access this unique resource for science education at the junior high and middle school level. As schools, teachers, students and others interested in science education increasingly come online, the electronic ASCP/SPTN will become a vital part of ASCP's grassroots base.

You can check out the ASCP/SPTN Home Page in two ways. If you have a computer with a modem and an Internet connection, you can Telnet to Chebucto Community Net at chebucto.ns.ca. Once there, register as a guest and go to the Education and Libraries link on the Chebucto Home Page and then to the link for Primary to 12. Scroll or tab down to ASCP/SPTN and you are there.

If you have an Internet access that lets you browse the World Wide Web or WWW (using a browser such as Mosaic or Netscape), here is the URL (Universal Resource Locator) you need to get to the ASCP/SPTN Home Page:

http://www.chebucto.ns.ca/Education/SPTN/ascphmpg.html.
The ASCP Home Page is a home to a wide range of information about ASCP, SPTN, SciencePlus, the authors and related science education topics. The Home Page is still under development and will continue to change and grow. We welcome suggestions, particularly on interesting sites you have found. You can even email your comments to ASCP through this page.

This fall we created the SPTN Mailing List. It is not a newsgroup, but an email distribution system for subscribers of the list. You have to subscribe, but there is no fee! A mailing list puts people with common interests in easy communication. You can post messages to the SPTN list which will go to all subscribers. Your colleagues on the list can respond either to the whole list or directly to you. As membership in the list grows, there will be a lively exchange about teaching science, curriculum ideas, suggestions for revision of SciencePlus, teaching strategies and other related topics. It can be, and already is, both locally oriented to the Atlantic provinces and worldwide in scope. The SPTN Mailing List is all about sharing and participating.

To join the SPTN Mailing List, send an email message to: majordomo@chebucto.ns.ca and in the body of the message (main text area) type: subscribe sptn. You will receive acknowledgment of your subscription a short while later and a welcome message from me.

So check out the ASCP/SPTN Home Page and subscribe to the SPTN Mailing List now. Join the SciencePlus authors and your colleagues in this exciting extension of the Atlantic Science Curriculum Project.

If you have any questions, email me at: pkidd@fox.nstn.ns.ca, by phone (902-443-4262) or c/o ASCPI (1331 Brenton Street, Halifax, N.S., B3K 2K5).

Peter Kidd

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SOME SITES TO VISIT

Environment Canada Atlantic : http://atlenv.bed.ns.doe.ca/how.html

Canadian Wildlife Federation: http://toucan.net/cwf-fcf/

CBC: http://www.cbc.ca


Hands On Universe (HOU)

This summer, I was able to attend a three-day training program for the Hands-On Universe (HOU) program led by Jodi Asbell-Clarke. HOU brings astronomical images from professional telescopes to our school computers. The images with which students work are not just pictures from a text; they are authentic data sets from professional grade telescopes. Sometimes the students may request the data themselves via the Internet. In Canada, Saint Mary's University's Burke-Gaffney Observatory will provide many images for the program.

HOU is a high-school level program that involves Physics, Math and Astronomy. As a junior high school teacher, I was worried that the program might be too complicated for the level of students I teach. After attending the workshop and using the software provided, I discovered there are many ways to integrate HOU into the junior high curriculum. Students will use the computers for much more than word processing or surfing the net.

Image processing software is available on CD ROM for both the Mac and PC environments. Students can zoom in on a blazing halo of the eclipsed sun, search for exploding stars in distant galaxies, and manipulate rich-hued portraits of the planets, doing real scientific problem-solving while learning astronomy, physics, and mathematics. Lessons are carefully prepared and come in a large binder. Mailing lists and Word Wide Web sites are also set up to help teachers and students. This makes an Internet connection necessary, as well as the fact that school may connect with each other and/or the observatory. The plan is for HOU to link together museums and community-based technology centres with schools and universities. There are over 100 schools involved with HOU around the world. Most are in the U. S. but England, Canada, Mexico and Sweden are involved as well.

...Mike McCormick is a teacher at Rockingham School

[Editors Note: Are you involved in or planning a project linking computers, science, and technology? We'd love to hear about it!]


Software for Apple


If you teach Grade 8 and have access to old Apple computers, Linda Pattison of A.J.Smeltzer School in Bedford has some software to recommend:

1. MECC "Oh Deer!" - Students manipulate the number of animals in a deer herd by using strategies recommended by the area's Department of Natural Resources.

2. MECC "Odell Lake" - In this simulation, students can create their own food chains and webs.

3. "5 Kingdoms" - This interactive tutorial deals with the five kingdoms of living things and discusses why life forms are sorted into groups.

4. "Thirty Elements" - This tutorial disc teaches the spellings and atomic symbols for the first 30 elements of the Periodic Table.

Linda also uses Appleworks Database to have her students organize a personal dictionary of significant scientific words in SciencePlus.

If you would like more information on any of the above, you can contact Linda at:


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USEFUL RESOURCES

This idea comes from a teacher in Dartmouth, who modestly prefers to remain anonymous!

In my classroom, I have a "Problem of the Week" board which includes a question related to the curriculum, the science world, or just general knowledge & thought questions. ("MindTrap"* is an excellent resource for this.) Students may also submit questions to me that they would like to have posted. Each student is allowed to submit one answer entry per week in the Problem of the Week box. Each Friday, last class, a name is chosen from those who have given the correct response, and a small prize is awarded to the winner. Every Monday, a new question is posted and the answer to last week's is also given. Any student in the school is allowed to participate, and students really have fun with this.

* MindTrap is published by MindTrap Games Incorporated, Oakville, Ontario, L6M 2S0 and is available in both French and English, at good toy stores, priced around $30.


Another Bright Idea

Particles (SP3) One idea that works well is to have the students construct a cartoon booklet for a Grade 3/4 student, esplaining how big particles are, how they are arranged in three states, and what happens to the particles during a change of state. They find the younger audience less threatening, and you can even have the booklets read and criticques by a local Grade 3/4 class. The Grade 9's enjoy the feedback and the fact that there will be a "live" reader adds more relevance.


Lumbricus Terrestris Races (SP1, Living Things)

Have you tried an actual worm race with your Grade 7's? Shirley Rushton and Isabel Mullaley, of EB Chandler Junior High in Amherst, have made it an annual event. They offer these suggestions:

You will need: large tarpaulin, masking tape, stopwatch, and students' earthworms.

On the tarp, mark two concentric circles, 60 cm and 180 cm diameter respectively. Assign two "timers" to record official times.


Earthworms have 3 minutes to clear inner circle or they are disqualified. Those which qualify must exit the larger circle in a 10-minute time. The winners in each class continue to race until a final winner is declared. Worms cannot be touched during the race but may be encouraged with water sprays, etc.

Shirley and Isabel give certificates for participation. A trophy, topped with a rubber work from a fishing supplies outlet, goes to the overall winner. As the races are run, they announce the day's results for the PA: "Fred, owned by Marie Barnes, went segment to segment with Joe Bert's worm, Billy Bob; after completing a full circle, Billy Bob found his bearings and won the race in 4:04, today's record time. Joan Power's worm collapsed on the track and died of hearts failure, all five hearts apparently failed..." You get the idea!

Shirley recommends three resources for the study of earthworms:

1. McLaughlin, Molly. Earthworms, Dirt and Rotten Leaves Avon Books, Dept. FP, Madison Ave., New York, NY Tel: 1-212-481-5653 Cost: $ 2.10

2. Bosak, Susan. Science Is Scholastic Canada Ltd. Cost is $29.95 but you can get a $10 reduction by ordering from The Communication Project, 164 Tomlison Circle, Markham, Ontario, L3R 9K2 or by calling 1-800-772-7765, and tell them you are a teacher of SciencePlus!

3. Video: Darwin's Plow, available from Media Services.


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PORTFOLIOS


The last newsletter featured an article which described the use of portfolios as a teaching strategy in the science classroom. This second article will examine the various ways portfolios can be used, and offer some suggestions as to their contents.

A variety of needs can be met through portfolios. Usually, the purpose is decided by the teacher. Portfolios can be used to indicate understanding of particular concepts or skills. As well, they can provide an overview of student progress in a particular subject, show parents what is being done in school, provide an opportunity for student self-reflection, and provide evidence for evaluation. Sometimes, they are used to help the teacher of the next grade in planning for the needs of individual students. Whatever the purpose, it should be thoughtfully chosen and clearly communicated to the students.

Once the purpose of the portfolio has been identified, a decision must be made as to the kind of evidence to be collected. Some teachers prefer to do this in collaboration with their students. The teacher may also wish to specify certain evidence that must be included, as well as allowing students to add items of their own choosing. Whatever is done, it is crucial that students be asked to explain how the evidence in the portfolio is related to the purpose of the portfolio. This might be done by having a caption for each submission which states what the evidence is and why it is considered to be evidence. Understanding the relationship between the evidence and the purpose helps students reflect on what they have learned.

The following list may be helpful when deciding what will count as evidence:

A final consideration when collecting evidence is whether the portfolio will contain only a student's best work or will include "work in progress". Although it may be difficult to include poor work, such work can serve to show the progress made by the student over time. If a decision is made to include work that does not represent the student's best efforts, it is important that students understand the reason.

Portfolios offer opportunities for students to make decisions and to reflect on their own learning. If you have decided to implement portfolios in your classroom, please let us know. We would like to hear about your experiences.



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IMPRESSIONS OF A ROOKIE

It seems like years ago that I stood before my first class of science students; thirty-five teens, each with their own personality, special needs and interests. As I asked them to take their seats and please be quiet, I was quickly giving myself one of my many "you can do it" speeches. Little did I realize how important these little pearls of encouragement were going to become. "Welcome to grade 7 science. I'll be your science teacher this year." All of a sudden, with just those few words, I was bombarded by questions: Are we going to the lab this year? Where's the teacher from last year? Are we going to cut things up? Do you give a lot of tests? Are we doing Science Fair this year?

Although I didn't realize it then, questions and finding the possible answers would become the norm in my class. I don't pretend to know everything about science. I read a lot of magazines and literature but that never seems to answer all the questions. My students also do a lot of their own reading and researching, trying to answer the questions they bring to class. But, as a new teacher, I would have to say that my most valuable and precious resource, in helping me to find my way and helping me to keep my feet firmly planted on the ground in the SciencePlus program, has been my colleagues. No university program can give as much support, wisdom, guidance and helpful hints as those who are in the same situation. Some day I hope to be able to give back at least some of the help that they've given me.

Science is all about discovery and asking questions, and boy, have I done a lot of that these past two months! More than I ever thought possible. I know I will continue asking questions: to my students, to myself, and to my colleagues, for the rest of my teaching career. Isn't that what being a science teacher is all about?


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A FLINKER? A FLINKER? WHAT ON EARTH IS A FLINKER?

Floating and Sinking (SP3)
Here's a bright idea that kept one participant at this year's Summer Institute busy for almost an hour!! We bet your students will love the challenge. It was adapted by Pierette Pheeney of St. Thomas University from Science Scope, May 19993. The student master follows.

Using the materials provided, students will construct an object that, when held under water and released, remains stationary. Students will need at least 20 minutes to come up with a successful "Flinker".

Pierette makes the following suggestions: try your local deli for large pickle jars; store the materials in plastic storage bags, which can be kept in the jar; have on hand 2 wire cutters (since some groups will wish to alter the length of the paper clips) and enough scissors for those who want to trim styrofoam or foil.

This would fit well with the "Floating and Sinking" unit, but could provide an interesting problem-solving activity for any level, at any time. Good event for Science Olympics too!

Materials:

(For each group of students)

Challenge

  1. First, fill your jar with water (almost to the top).
  2. Examine the materials in your ziplock. Then construct a contraption which will not sink or float. In fact, it should stay in the middle of the jar.
  3. Try as many different objects as you want. Don't get frustrated!! Try different combinations!
  4. How does your flinker work? Why does it flink?
P.A. Pheeney, St. Thomas University
Adapted from Science Scope, May 1993
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For Your Information

About Us

The SciencePlus Teachers Network (SPTN) is part of the Atlantic Science Curriculum Project (ASCP), linking teaching, curriculum development and research in science education. INTERACTIONS is the newsletter of the SPTN, produced twice a year. SPTN Committees are active in nova Scotia and New Brunswick. they consist of teachers working with members of the ASCP Board of Directors.

Correspondence to:

Nan Armour, Atlantic Coordinator
SciencePlus Teachers Network
1331 Brenton Street
Halifax, Nova Scotia, B3J 2K5
Phone: (902) 422-5953 or 422-1944
FAX: (902) 422-1415
Email: Nan Armour