Nov24

Health and the Human Body

Science Scope Cover This month’s issue has a theme that is appealing to most middle school students – the human body.

The article Choice, Control, and Change has a SciLinks, code for “Investigate good health” SS110701. This leads to a list of sites related to health issues such as obesity, vaccines, diet, and dental health. But if you want information on specific anatomy and/or physiology topics, you’ll have to dig a little deeper.

If you’ve never tried this, here is your assignment! After logging in to SciLinks, if you’re a registered user (not a guest), you get the chance to enter in a keyword such as “Blood” or “Circulatory System.” The other option is to do a search by NSES standard (National Science Education Standards). Choose a subject, topic, and grade level. Try “Life Science” as the subject, “Structure and Function in Living Systems” as the topic, and “5-8” as the grade level. You’ll get a list of all of the keywords for websites that are correlated to this very broad topic. As you scroll down, you’ll see topics such as Body Systems, Blood, Circulatory System, and Tissues and Organs. Click on a topic to get the SciLinks list of websites. Let me know in a comment if you have any trouble doing this.

When I taught seventh-grade life science, one of my essential questions was “What adaptations do living things have to sense and respond to their surroundings?” The first unit we did was on the human nervous system, including the brain and sense organs. The students were fascinated by this, and this unit was a good context to review what they knew (or didn’t know) about cells and tissues. We then looked at other animal phyla, from the simplest to the most complex, using this question and knowledge of the human nervous system as a framework. My favorite investigation was “What stimuli do earthworms react to?

To help student learn about the human nervous system, you won’t go wrong with Neuroscience for Kids. This website has recently been updated and is even better than the first time I saw it. This site could easily be the basis for comprehensive unit on the nervous system.
Published: Nov-24-07 | 1 Comment | 0 Links to this post

Nov24

Literacy Skills in Science

Science & Children Cover As part of a project I am working on, I was visiting the science classes of teachers who participated in a summer professional education project. One of the elementary teachers indicated that I should wait until April to visit hers. She said that in her school, they didn’t teach science until after the state reading and math tests were over in the spring!

Although this is (I hope) an extreme example, it seems that science, social studies, and the arts are being cut back to provide more reading time, at least in some elementary and middle schools. Maybe as a veteran secondary teacher I’m asking a silly question, but why can’t reading (and writing) skills be taught in the context of subjects such as science, social studies, and the arts?

In this issue of Science & Children, there are several articles on just this topic. The Reading and Science article makes two interesting points. For those who wonder if hands-on activities discourage or replace reading, the author cites research that shows the opposite. In more stimulating settings, student motivation to read increases. The author also describes “authentic reading” as reading for a purpose. Students who engaged in purposeful reading improved in their comprehension. I’m curious as to how much emphasis there is on nonfiction reading in our classrooms, which is what most of this authentic reading would be.

Another article poses the question How is reading science books different from reading other kinds of books?” The focus on fluency in reading (words per minute) may be counterproductive in reading science texts, where science reading is a slower process, and going back to reread a section is appropriate. Are students being instructed and guided in these processes?

I hope that secondary teachers will look at these two articles. I wonder if many of the reading “problems” in secondary students are in reality a lack of guidance and experience in reading these informational texts? I know that secondary teachers feel that reading instruction is not their job. I would agree that if secondary students cannot decode words, there is a need for intervention by reading specialists. But I’m not convinced that it’s the job of a reading or language arts teachers to teach students how to read science texts, to instruct students in specialized science vocabulary, or to teach students how to write lab reports. Who better to do this than science teachers?

Making sense of science textbooks and web resources requires another type of literacy – visual literacy. Think of how science uses nonlinguistic representations – symbols on a weather map, the Periodic Table, chemical equations, Punnet Squares, molecular diagrams, formulas, graphs, diagrams, maps (the list goes on!). With all due and utmost respect to my colleagues in the Language Arts/Reading department, I’m not sure that they are the right folks to teach my science students how to interpret and create these representations.

Regardless of the grade level, one of the best ways to help students interact with these texts is by modeling. It doesn’t require a lot of professional development to do a “think aloud” and make your thinking process visible (and audible) to students. For examples, our textbooks are now full of graphics that support the content, but many students do not always see the relationships between the graphics and the text. It’s been my experience that taking a little time to model how to see these relationships may be what students need to eventually become more independent readers.

There are many web resources that can help you. We’ve created a new SciLinks, Keyword “Reading and Writing in Science,” and we’ll be adding some teacher resources for this. In the meantime, here are two sites that are good ones to start with: Think Aloud and Strategies for Effective Use of Science Reading Materials

I saw a college professor of physics doing a “think aloud” with a group of elementary teachers. He was modeling how to interpret graphs and to see the story that the graph was telling about their investigations. It took a few minutes of the classtime, but the teachers understood and were then able to apply the skill to other graphs.
Published: Nov-24-07 | 0 Comments | 82 Links to this post

Nov15

From Cyberspace to SciLinks: Website Design

SciLinks Logo I’ve described a few components of the SciLinks rubric so far: the accuracy and appropriateness of the content, the credentials of the sites owner/author/sponsor, and “interactivity.” The overall design or “look” of a page or website is an important part of the review process for including a website in SciLinks. Whether the site is a single page or a connected set of pages, the arrangement of text and graphics will be what compels someone to read the page.

We’ve all seen sites whose design is visually appealing. These sites use spacing to set off the text, making it easier to read. The text is chunked into paragraphs or smaller segments, and the colors of the text and background do not clash. The graphics and animations are of high quality and are integral to the content, not just decorative. Multimedia components such as video clips or podcasts add value to the site. Annoying or distracting sound effects are minimal, and popups and advertising are not included (or are kept to a minimum). A menu, index, or arrows help the user to navigate through the site. Here are several examples of well-designed sites in SciLinks:
  • Lionfish Invasion from NOAA has a lot of features, as noted in the menu on the righthand side of the page. This menu stays on the page as you explore the site so that you can always find your way back.
  • Most PBS sites, such as The Shape of Life, follow a similar design. Note how this one uses a pictorial index to guide the user. The dark background sets off the photographs. This site can be explored in a variety of ways.
  • Geyser Quest is described as an “electronic field trip.” Note how it’s designed to be used with a variety of technological capabilities. The navigation tools are easy to use. My one comment would be that there’s no way to stop the “field trip” and continue at a later time.
  • My dad and I used to love to look at maps. A Tapestry of Time and Terrain lets you overlay geology and topography maps. The more you explore, the more information becomes available.
Not everything that is on the World Wide Web is meant for the whole world! Lecture notes, class assignments, and PowerPoint slides are often made available to students in classes. These may or may not be appropriate and useful for the rest of us, especially if they refer to a particular textbook or specific class activities. These often are text-based and generic in design. However, for some topics, especially advanced ones, these class notes or text pages may be the only informational sites available.
Published: Nov-15-07 | 0 Comments | 0 Links to this post

Nov15

Global Science Education

Science Teacher Cover The article Using Japanese Lesson Design to ANTicipate an Invasion on Maui caught my attention, not as much because of the topic of fire ants as an introduced species, but for the description of “Lesson Study.” What I found interesting was how this Japanese approach is very different from the way lesson planning is conducted in American schools.

I’ve worked with schools that have “common planning time” in the teachers’ schedules, but in many cases, the “planning” session quickly degenerates into a gripe session or to another individual prep period. I suspect that this is because teaching in American schools is often seen as a solitary profession. There seems to be some sort of unwritten law that we have to do it all ourselves, and that somehow we are “cheating” if we work together or share lessons and other resources. Even when two or more teachers teach the same subjects, there is often little or no consistency in what is taught, in assessments, or in grading systems.

“I’m starting a unit next week on XYZ, and I need some ideas for activities.” This plea is often seen in listserves or teacher bulletin boards. I wonder what it would be like to work with a group of teachers to create, test, and refine curriculum-related lessons. What if these were then published so that others would not have to re-invent the wheel? What if eventually teachers would have their entire course mapped out with tried and true lessons, ready to be used, rather than scrambling on a daily/weekly basis to plan? I realize that for different groups of students, the lessons may have to be modified or extended, but that is certainly better than starting from scratch at the start of each unit.
I’d like to learn more about Lesson Study. I’ve started with a few websites: But I’d like to know more about what this actually looks like in real schools. Japanese Lesson Study, Staff Development, and Science Education Reform describes the efforts of the the Neshaminy School District in Pennsylvania.

Many of the secondary schools I work with are very small, with only 1-2 science teachers in each subject. How would Lesson Study be conducted in these small schools? What kind of professional development (and administrative support) is necessary for Lesson Study to be effective? It would be interesting to hear from other teachers who have been involved in this form of action research/professional development.
Published: Nov-15-07 | 0 Comments | 0 Links to this post