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History and nature of science

By Mary Bigelow

Posted on 2007-10-22

Science Scope cover, October 2007In the local newspaper, an organization advertised its Haunted House event for Halloween. One of the chambers is the laboratory of a “mad scientist.” I’m sure it was full of the usual stereotypes from horror movies.
Compare these caricatures with the work of real scientists in this month’s Science Scope. (You can access the table of contents by clicking on the picture of the cover.) None of the articles this month has a SciLinks connection code, but you can create your own list by logging into the SciLinks site, and in the Member’s Triad Search, select “History and Nature of Science” and “Science as a Human Endeavor” for a list of interesting websites.
One of my favorites is the website of the Chemical Heritage Foundation. The Classroom Resources section has a section on Chemical Achievers, with biographies arranged by topic. Rather than just a litany of facts, these biographies have graphics, oral histories, and timelines, organized around themes. Some familiar names are here, as well as some that reflect the diversity of those who have made significant contributions. I can spend hours with this site!
Another good resource is Science as a Human Endeavor . This is part of a site created by teachers to showcase websites that relate directly to the National Science Education Standards.
Although the cover of this month’s journal is beautiful, the four scientists (I recognize Benjamin Franklin, Thomas Edison, and Albert Einstein, but I’m not sure about the fourth one. Any suggestions?) are famous figures from the past. By concentrating on these historical figures, I wonder if we are perpetrating the misconception that science is, as my students might say, “so over.”
How many of our students (and teachers, perhaps) have ever met a real scientist? Museums, government agencies, businesses, and colleges/universities have scientists that can provide our students with real-life examples of what a scientist does. I was involved with a project that brought together two scientists from a natural history museum with local teachers. The herpetologist shared his nationwide research project on frogs and involved the teachers in their own studies of vernal pool amphibians. The entomologist shared her research on endangered species of butterflies and guided the teachers through a study of insect populations in their own schoolyards. It was interesting to watch the interactions between the teachers and these scientists who have a real passion for their work.
In another project, university science professors teamed with K-8 teachers. In addition to conducting hands-on, inquiry-based workshops, the professors visited the teachers’ classrooms on a monthly basis. The students in theses rural schools were astounded to meet real scientists! One child even asked the physics professor if he would autograph his textbook! (I know that writing in textbooks is a no-no, but I would have made an exception in this case.)
A teacher recently asked me for suggestions to replace the library activity in which students prepared “reports” on famous scientists. She wanted students to learn about these scientists, but in the era of electronic encyclopedias and Wikis, having students re-write a list of events and discoveries did not seem like a productive use of students’ time and the school’s technology. We came up with a few ideas (this month’s journal has some great suggestions) for her to try, but perhaps you have some teacher-tested ones already in your lesson plans?
The bottom line here is that the most interesting scientists are not just from the past or the present. Put a mirror on a bulletin board where students can look at scientists of the future!

Science Scope cover, October 2007In the local newspaper, an organization advertised its Haunted House event for Halloween. One of the chambers is the laboratory of a “mad scientist.” I’m sure it was full of the usual stereotypes from horror movies.

With Forensics: Wildlife Crime Scene!, your students investigate an actual crime, learn the science behind animal-species identification, and find out about efforts to fight real-world threats against wild animals.

The book is designed to be engaging for both you and your student-detectives. It’s also easy to use. The material is divided into four clear sections:

1. Background about crimes that threaten wild animal species around the world.
With Forensics: Wildlife Crime Scene!, your students investigate an actual crime, learn the science behind animal-species identification, and find out about efforts to fight real-world threats against wild animals.

The book is designed to be engaging for both you and your student-detectives. It’s also easy to use. The material is divided into four clear sections:

1. Background about crimes that threaten wild animal species around the world.
 

Another Fall event – Mole Day

By Mary Bigelow

Posted on 2007-10-17

In a previous entry on fall activities, I forgot to include Mole Day, celebrated on October 23 (10/23) from 6:02 a.m. to 6:02 p.m. The timing of this event celebrates Avogadro’s number — 6.02 * 10^23
For more information on the concept of a “mole” (in a chemical context, not the mammal!), login to SciLinks, and enter “Avogadro” into the keyword search. You’ll get a list of websites related to moles and to the work of this scientist.
This day is used to celebrate the science of chemistry and its applications. The National Mole Day Foundation’s website has background information, themes, and some suggested activities. The American Chemical Society has embedded Mole Day in its National Chemistry Week events. The ACS site has many resources for students and teachers of all grade levels.
Rather than competing with the commercial hoopla around Halloween, perhaps we science teachers could do our own special celebrations that relate to science concepts! I’ve also heard of teachers who reverse the numbers and celebrate their mole day on June 2 (6/02) at 10:23 a.m. This could be a neat end of the year wrap-up!
According to several sources, this event was inspired by an article in NSTA’s The Science Teacher from the 1980s, but these sources do not mention the title of the article. Unfortunately, the online archives for this journal do not go back that far to get the original article, and I’ve recycled my journal copies from the 80s and 90s. Does anyone have the title and author of the article?

In a previous entry on fall activities, I forgot to include Mole Day, celebrated on October 23 (10/23) from 6:02 a.m. to 6:02 p.m. The timing of this event celebrates Avogadro’s number — 6.02 * 10^23
For more information on the concept of a “mole” (in a chemical context, not the mammal!), login to SciLinks, and enter “Avogadro” into the keyword search. You’ll get a list of websites related to moles and to the work of this scientist.

 

Mathematics integration

By Mary Bigelow

Posted on 2007-10-15

Science and Children cover, October 2007This is the theme of the October Science and Children. Whether you’re an elementary or secondary teacher, be sure to check out this issue online (just click on the photo) for some discussions on the relationship between science and mathematics and some activities that can certainly be adapted for science students, regardless of their ages.

The articles on graphing do not have any SciLinks codes, so I’ll mention one of my favorites! Create a Graph is a tool that helps students create graphs from their data. There is a tutorial on types of graphs and how to choose the appropriate one for the given task. To make the graph, you enter the title of the graph, labels for the variables or categories, and the actual data. You can even select the colors and fonts! After seeing the graph, you can print it or save it in several graphic formats. The neat part is that you can email it to yourself and receive a link so that you can go back to the site and edit the graph later! This is a user-friendly, online alternative to more complex graphing programs.
I’m currently working with a project that is teaming university science professors with K-12 teachers (mostly at the K-8 levels). One of the physics professors was working with the teachers on graphing the data from their wind energy investigations. He described graphing as another way of telling a story. After he modeled the process, he showed them a graph and they had to brainstorm possible stories. They came up with some interesting ones! It was an effective way to demonstrate the value of graphs as a means of communicating information and events (stories).
The students in the article “Making ‘Photo’ Graphs” (scroll down to the article link) told a story about plant growth with their graphs. Nice work, and they’re third-graders!

Science and Children cover, October 2007This is the theme of the October Science and Children.
 

From cyberspace to SciLinks: website interactivity

By Mary Bigelow

Posted on 2007-10-07

It took me a while to get used to this part of the rubric. When I first became involved with software design back in the 1980s (yes, light years ago!), “interactivity” meant that the user could explore the program (there were no websites then) by clicking on buttons or links and using the program in a nonlinear fashion. The buttons led to other screens, additional information, graphics, etc.
In the SciLinks of the 2000s, the concept of interactivity has a tighter focus, beyond pointing and clicking on topics. Many sites are wonderful sources of information with interesting text and graphics, but some do go beyond this to include these interactive functions:
Quizzes Some sites have online quizzes that provide feedback specific to the user’s response in a quiz format, usually multiple choice. Quite frankly, I’d prefer that site developers skip this feature rather than include a poorly designed or trivial quiz. I’d ask whether the quiz helps the user to review the content. I look carefully at what happens if the user is incorrect — sound effects or sarcastic comments are not helpful to the student. Ideally, the site should direct the user to a section in which the topic is discussed further or to an explanation as to why a response was correct or incorrect. Some sites add up and display the number of items correct. Plant Parts Salad reviews the parts of vascular plants.
The Life Cycle of a Moss tutorial finishes with a brief quiz.
Simulations These are often animations depicting a real situation. Or they can include graphics that resemble a sort of calculator. In any case, the user does more than simply start and stop an animation or video. The user manipulates objects or enters values for variables, and feedback is provided in terms of calculations or further animations showing the results. For example, the site Harmonic Motion uses descriptive animations, followed by simple simulations in which the user can change speed, force, and/or other variables.
Datasets Although SciLinks sites can be a rich source of information, true datasets are not very common in SciLinks sites. These datasets are more than just lists of facts or graphics. The user can manipulate, search, sort, copy/paste, or export data. Earthquake Center has a wealth of current data on seismic activity and a list of recent and historic earthquakes with descriptions, maps, and graphics.
I’ve used some of these interactive sites with students, displaying the sites on a screen (or SmartBoard), especially the simulations. Working in groups, the students come up with how they want to change the variables. It’s interesting to ask for their predictions as to what will happen. If your favorite interactive site is not in SciLinks yet, send the URL!

It took me a while to get used to this part of the rubric. When I first became involved with software design back in the 1980s (yes, light years ago!), “interactivity” meant that the user could explore the program (there were no websites then) by clicking on buttons or links and using the program in a nonlinear fashion. The buttons led to other screens, additional information, graphics, etc.

Just as science education doesn’t stop at the schoolhouse door, neither should effective application of the National Science Education Standards. Exemplary Science in Informal Education Settings shows real-world examples of how science education reform has taken hold in museums, science centers, zoos, and aquariums as well as on television, radio, and the internet.
Just as science education doesn’t stop at the schoolhouse door, neither should effective application of the National Science Education Standards. Exemplary Science in Informal Education Settings shows real-world examples of how science education reform has taken hold in museums, science centers, zoos, and aquariums as well as on television, radio, and the internet.

Exemplary Science in Informal Education Settings: Standards-Based Success Stories

Just as science education doesn’t stop at the schoolhouse door, neither should effective application of the National Science Education Standards. Exemplary Science in Informal Education Settings shows real-world examples of how science education reform has taken hold in museums, science centers, zoos, and aquariums as well as on television, radio, and the internet.

Just as science education doesn’t stop at the schoolhouse door, neither should effective application of the National Science Education Standards. Exemplary Science in Informal Education Settings shows real-world examples of how science education reform has taken hold in museums, science centers, zoos, and aquariums as well as on television, radio, and the internet.

 

"Fall" into SciLinks

By Mary Bigelow

Posted on 2007-10-01

It’s October already–the air is getting a little cooler, the leaves are changing color, and the number of daylight hours is decreasing. Some birds have left for their winter homes, and others are arriving or passing through. And, of course, the World Series is just around the corner and football season is underway!
What a great time of year to be a science teacher! There are so many opportunities to connect science with these events, and SciLinks has lots of websites that can help to make these connections. I searched the database to come up with a few examples:
Leaves
What Tree Is It? is a dichotomous key that is easy to use at any age.
This lesson at Look at Those Leaves will have students observe, measure, and sort tree leaves along with examining leaves individually, in groups, and in relationship to the entire tree.
How Leaves Change Color describes the reasons behind the beautiful fall foliage.
Seasons
Astronomy with a Stick is an online project to help your students understand how the positions of the sun and the earth affect the daylight hours. Free registration allows your class to interact with other classes worldwide! The directions say for students to use newspapers to get the time of sunrise each day, but the U.S. Naval Observatory’s website lets you enter a location and date to get this information!
What Causes the Seasons? has many diagrams to explain the reasons for the seasons.
The fall was my favorite time to do a comparison study of trees and leaves and to explore the effects of temperature on the behavior of living things. What other investigations are your favorites for the fall?

It’s October already–the air is getting a little cooler, the leaves are changing color, and the number of daylight hours is decreasing. Some birds have left for their winter homes, and others are arriving or passing through. And, of course, the World Series is just around the corner and football season is underway!
What a great time of year to be a science teacher! There are so many opportunities to connect science with these events, and SciLinks has lots of websites that can help to make these connections. I searched the database to come up with a few examples:

 

Getting the Most out of Electrophoresis Units

The Science Teacher—October 2007

At Oklahoma City Community College, they have developed gel electrophoresis activities that support active learning of many scientific concepts, including: pH, electrolysis, oxidation reduction, electrical currents, potentials, conductivity, molarity, gel electrophoresis, DNA and protein separation, and DNA fingerprinting. This article presents six different ways that electrophoresis can be used to help students learn multiple science concepts.
At Oklahoma City Community College, they have developed gel electrophoresis activities that support active learning of many scientific concepts, including: pH, electrolysis, oxidation reduction, electrical currents, potentials, conductivity, molarity, gel electrophoresis, DNA and protein separation, and DNA fingerprinting. This article presents six different ways that electrophoresis can be used to help students learn multiple science concepts.
At Oklahoma City Community College, they have developed gel electrophoresis activities that support active learning of many scientific concepts, including: pH, electrolysis, oxidation reduction, electrical currents, potentials, conductivity, molarity, gel electrophoresis, DNA and protein separation, and DNA fingerprinting. This article presents six different ways that electrophoresis can be used to help students learn multiple science concepts.
 

September publications and SciLinks

By Mary Bigelow

Posted on 2007-09-08

Each month, I’ll mention some sites that relate to that month’s themes of the three K-12 NSTA journals. These are sites that illustrate what I think is a good use of the technology.
Science and Children – Animals – I’d certainly like to show younger students that there are many interesting animals in addition to the dinosaurs!
History and Biology of the Horseshoe Crab
This site shows how a clean design and chunking of the text and other features work together in to create a user-friendly site. This is appropriate for younger students, but older ones will find the information interesting as well. I spend a great deal of time on the Delaware beaches and my community is a horseshoe crab sanctuary – and yet I learned a lot from this site myself!
Classifying Critters
Anything from the Howard Hughes Medical Institute is a quality site, in my experience! This is part of a really nice site for younger students on using physical characteristics to classify animals, and one I might use with the whole class. This could lead to interesting discussions.
Critter Guide
I like this one for older elementary or middle school students, in that it is a very browseable, searchable site with interesting pictures and information that is well organized. (My one criticism would be the use of Marine Life as a category, when the other categories are based on physical characteristics).
Science Scope – Reading – This is an area of professional interest to me. Reading in the science classroom was the focus of my graduate work, and I loved being able to help students learn how to read nonfiction, such as science textbooks and magazine articles (and now websites) in my classes.
Building Big
I was impressed at how this site combines text and graphics in a browseable format that lets the user pursue topics of interest. But the Build-a-Bridge feature focuses on using what has been read to create structures in an interactive segment, and the users then get feedback on their designs (and a timely topic given the issues of infrastructure after this summer’s event in Minnesota). I’ve found that most PBS sites are excellent and can be used independently of their programs.
Classroom Exploration of Oceans
These explorations have beautiful photographs and real-life stories about scientists and their studies. NOAA has an amazing number of quality sites.
Windows to the Universe
In SciLinks, there are many components of this site entered in the database separately. What appeals to me as a middle school teacher is the fact that there are three levels of text: beginner, intermediate, and advanced. Sometimes the amount of information differs from level to level, and other times the text is chunked differently. Nevertheless, the site can be personalized to the student.
The Science Teacher – Weather and Climate – I’ve just finished up monitoring a summer program that had teachers creating weather maps and learning about climate change. I hope they have access to sites such as these.
Weather
This site looks at the relationship between the oceans and weather. What I like here is the section for educators that has suggestions on how to use this site in a classroom.
Weather World 2010 Project
In SciLinks, there are many individual components of this site in the database. For me, I’d save money on meteorology textbooks and use this site instead (and channel the textbook budget into purchasing a weather station!). It’s written in an interesting style so that teachers can use it for their own background knowledge, too, or teachers can use the section on “Projects and Activities.”
Weather and Climate Basics
This is a good site to let students read about the differences between weather and climate. It’s full of really good graphics.
To see many other SciLinks sites, go to www.scilinks.org. If you’re not registered, login as a Guest to check out what’s here. Or use your NSTA member number to login, or you can register (free) as a teacher/parent.
Each month, I’ll mention some sites that relate to that month’s themes of the three K-12 NSTA journals. These are sites that illustrate what I think is a good use of the technology.
Science and Children – Animals – I’d certainly like to show younger students that there are many interesting animals in addition to the dinosaurs!
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