iPad Smart Board App

Splashtop has an app on the Apple App Store that can make an iPad function as a remote smart board.  This app is not the first of its kind, but the app is incredibly functional and elegant.  After minimal setup the companion program runs in the background of a computer.  The iPad needs to be connected to the same wireless network as the computer.  The app can then be started on the iPad and the two devices are ready to run.

The iPad will display a live feed from the computer desktop.  Not only does the setup provide remote control of the computer, but it also can do annotations that are displayed right on the screen.  That means a presentation can be managed in the palm of the hand, and at the same time notes can be made directly on the current screen.  This app is exciting for anyone with the equipment for the setup.  The app’s website is http://www.splashtop.com/whiteboard.  I strongly recommend anyone with an iPad (1 or 2) check it out.

AlloSpec

I wrote this program to illustrate allele divergence, which is useful as an introduction to speciation.  The program is intended for the students to work through.  I wrote the code myself, and for that reason I would love to get some feedback from anyone willing to give it.  What’s good?  What’s awful?  Idea for additions?  Also, please feel free to use!

A video describing how to use the model is on my YouTube channel:  http://www.youtube.com/user/ralph0305?feature=mhee#p/u/1/Guvc0fjECZA

The model is written for NetLogo:  http://ccl.northwestern.edu/netlogo/

And the code for the model is on my website, but here is a direct link:  http://www.biologyrocks.org/AlloSpec_1.1.nlogo

Thanks in advance!  Michael

 

v. 1.2

Botanical Enigma

A student of mine has a question for everyone.

“When starting a planting “box” for growing Wisconsin Fast Plants we were going to plant we noticed a small single leaf had shot up through the soil. We let the plant grow and it sent out a stem having three leaves a’ top. It has grown to a good size.  Each stem it has grown averages 25 cm (nine inches) long. The pattern on the leaves is clover-like (small white heart shape) and the leaves are small and go to a rounded point.  Small hairs have grown the length of the stems.  Ten stems have counted so far and many more are growing. We have researched through books and have found nothing on this, and horticulture teachers have seen and cannot identify the plant. We would like information on the plant. If you know internet sites or books that will identify the species please send URLs, links, or titles, it would be very much appreciated.”
Aaron Fink

Solar Powered Hornet?

This study came out late last year, but I recently discovered it.  I didn’t get access to the whole article, but I have posted the abstract and a link to one of the sites that has the article below.  My students thought it was really interesting, and we talked about it as an end to our photosynthesis objective.



Oriental Hornet

The Oriental hornet worker correlates its digging activity with solar insolation. Solar radiation passes through the epicuticle, which exhibits a grating-like structure, and continues to pass through layers of theexo-endocuticle until it is absorbed by the pigment melanin in the brown-colored cuticle or xanthopterin in the yellow-colored cuticle. The correlation between digging activity and the ability of the cuticle to absorb part of the solar radiation implies that the Oriental hornet may harvest parts of the solar radiation. In this study, we explore this intriguing possibility by analyzing the biophysical properties of the cuticle. We use rigorous coupled wave analysis simulations to show that the cuticle surfaces are structured to reduced reflectance and act as diffraction gratings to trap light and increase the amount absorbed in the cuticle. A dye-sensitized solar cell (DSSC) was constructed in order to show the ability of xanthopterin to serve as a light-harvesting molecule.

The whole article: http://www.springerlink.com/content/w657861740333733/

Ongoing Study Examines the Possible Versatility of Inquiry Education

A project that originated in Dodge City is exploring the impact a curriculum steeped in inquiry-based laboratories and activities can have on student learning and attitudes.

Animal Behavior Lab

While inquiry is a term heard often these days in science education, a move to inquiry activities as a primary mode of instruction would still be a cause for some sleepless nights to many teachers.  Shannon Ralph (a co-author within the program) is no different.  She has been teaching for 9 years in Dodge City, and would have been considered a fairly traditional teacher several years ago.  However, since then she has been converted heart and soul to an inquiry-style teacher.  She writes about her experience with the transition:

“It’s a little scary moving to a new teaching style when it is not the pedagogy I was taught.  What I have found however is that my students are more engaged, enjoy science more, AND learn the content!  It’s a win-win for us!”

Group Cooperation is Critical

The project was formally commissioned a year ago to re-develop a curriculum to be delivered to general biology students in the 10th grade.  With an honors program in place, the curriculum was designed for use by students in the lower two-thirds of the class.  In the fall of 2009, two teachers (a co-author of the program, Shannon, and a teacher unfamiliar with the project, Kevin) used the materials in two pilot classes.  The classes that would implement the curriculum were chosen at random from the catalogue.  Numerical data was gathered from Kevin and compared to other sections of general biology that he taught using traditional materials (the lessons he had used the previous year, largely unchanged).  Subjective data regarding student opinion was gathered from Shannon’s classroom in the form of written feedback and a video interview.  In addition, both teachers have provided anecdotal feedback and both classes participated in an interview with the building principle during the school year.

Can Beta Fish Learn?

The classroom methods implemented included inquiry laboratory experiences, hands-on activities, a technology rich environment, and contemporary approach to note taking.  53% of all class days include laboratory work.  When hands-on activities are added to the figure and assessments, assessment reviews, and a lab safety day are removed the “active learning day” percentage jumps to 81%.  To supplement the classroom environment, the students had daily access to netbooks (very small laptops).  They used the computers to access the class website for notes, handouts, or assignment turn-in.  They also used the Internet as a resource for projects, the classroom forum for class discussions, and to interact with computer models and simulations.  Finally, the class did not use a formal textbook.  Instead, the students are trained to take effective notes (and use them).  Lectures with note taking are limited to 20 minutes maximums, and PowerPoint slide counts to eight or less.  The slides present the important information as it should be recorded, and nothing more.  Students are allowed to listen to the lecture, because the noteworthy pieces have already been extracted for them.  Afterwards, the product they have is useful to them during labs and activities.

Teaching Beta Fish

Results from the initial semester are promising.  One section of Kevin’s class used the new materials and was compared to two of his sections using traditional materials.  The standardized test scores showed significant change.  On the district specific CRAs (criterion reference assessments), students that pass rose from an average of 41% of the class to 56%.  This is a move of two and a half standard deviations.  On the state assessments, the percentage of the class that achieves an advanced or exemplary score increased from 27% to 49%.  Both control classes had percentages of 27% and 28%.  While the sample size is unfortunately small, these results are at the very least promising.  The numbers are compared in the graph below.

Class Test Performance

The project’s prime directive was to make biology relevant to students.  The student feedback from the semester was overwhelmingly positive.  Students gushed on the written forms, and two volunteered for a video interview.  The principal commented after her interviews that most students responded multiple times during the class discussion, and all had great things to say about science.  The students also had great things to say about themselves and what they felt they could accomplish.  They felt they were working to, and meeting, “higher standards.”

Ecology Biomass Fieldwork

The early results indicate that all kinds of students can flourish in an inquiry environment.  Many students in these classes are students that a teacher may consider unable to handle an inquiry-heavy environment.  One student had already accumulated over 50 discipline referrals in his young career!  However, there were zero behavior problems in either class all semester.  The students indeed surpassed everyone’s expectations in almost every way possible.  This study is ongoing, but the early data indicates science educators may want to rethink who can or cannot benefit from an inquiry-rich environment.

Students Study Macromolecules

For a more complete description of the semester’s results, including the students’ interview and all written feedback forms, visit www.biologyrocks.org.  Kevin is using the inquiry-based materials in all of his courses this semester, and Shannon is using them in her honors courses.  As the results from this semester become available, they will be posted to the project website as well.  Next semester, a third cooperating teacher will begin using the materials in the same building.  The project would also like to work with a beta site for replication.  If you would like more information on the program, materials, or are interested in working with the project, visit the website or email mralph03@gmail.com.