experimental design motivating student questions l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Experimental Design & Motivating Student Questions PowerPoint Presentation
Download Presentation
Experimental Design & Motivating Student Questions

Loading in 2 Seconds...

play fullscreen
1 / 18

Experimental Design & Motivating Student Questions - PowerPoint PPT Presentation


  • 341 Views
  • Uploaded on

Experimental Design & Motivating Student Questions Robert Bohanan, Center for Biology Education WEEB II Opportunities for Investigation at Different Scales Individual organism Population(s) of a particular species Interactions between and among species - communities

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Experimental Design & Motivating Student Questions' - Donna


Download Now An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
experimental design motivating student questions

Experimental Design &Motivating Student Questions

Robert Bohanan, Center for Biology Education

WEEB II

Bohanan/Niemi/Wachtel

opportunities for investigation at different scales
Opportunities for Investigation at Different Scales
  • Individual organism
  • Population(s) of a particular species
  • Interactions between and among species - communities
  • Movement of matter and energy - ecosystems

Bohanan/Niemi/Wachtel

group assignment
Group Assignment
  • In groups of 2-3 think of 5-10 Questions that you have about garlic mustard at the school forest

Bohanan/Niemi/Wachtel

research projects initiated by schools as part of schoolyard science sys
Research Projects Initiated By Schools As Part of SchoolYard Science (SYS)
  • Life history and natural history of native and non-native organisms
  • Succession and the impact of invasive organisms in schoolyard habitats
  • Biological diversity of restored wetland habitats
  • Development of a woodland management plan for school forest habitat
  • Seasonal comparison of aquatic invertebrates in a small river
  • Phenology of a vernal pond
  • Comparison of 2 urban sediment detention ponds*
  • Modeling nutrient dynamics in aquatic microcosms*
  • *Specific classroom study on student learning (Science Scope In Press Fall 2005)

Bohanan/Niemi/Wachtel

motivating students to ask questions and to guide their investigations an active learning exercise
Motivating Students to Ask Questions and to Guide Their Investigations:An Active Learning Exercise
  • What is an Invasive Organism?
  • How are Invasive Organisms different from Native/Natural Organisms?
  • Why do you think that people are interested in invasive organisms?
  • In your group identify and list 5-10 characteristics or traits of an invasive organism.
  • How are these traits similar and different to native or natural organisms?

Bohanan/Niemi/Wachtel

some previous work
Some Previous Work
  • Life History and Natural History of Invasive Organisms
    • Characteristics of invasive plants
    • Comparison of native and non-native plants in SYS habitats
    • Developing an invasive plant management plan for SYS habitats

Bohanan/Niemi/Wachtel

ways of thinking about data
Ways of Thinking About Data
  • Databases that provide background on plants and animals
  • Databases that provide additional resources
  • Databases that may be queried
  • Real-time remote sensing data

Bohanan/Niemi/Wachtel

motivating student questions a 6th grade classroom study
Motivating Student Questions:A 6th Grade Classroom Study
  • Questions initially grounded in observations
  • Productive questions lead to scientific inquiry
  • Classroom discussion makes explicit links between questions and evidence
  • Collaborative research project on model-based reasoning with Lucas, Broderick, Lehrer, and Schauble

Bohanan/Niemi/Wachtel

initial questions from students after observations at ponds
Initial Questions From Students After Observations At Ponds
  • How much blood can a leech suck in an hour?
  • Are there more fish in our pond?
  • Where does the water come from?
  • What happens to the animals in the winter?
  • How does the water in the pond get polluted?
  • Is the animal life in pond 2 more diverse than pond 1?

Bohanan/Niemi/Wachtel

what makes a good question initial criteria developed by students
‘What Makes A Good Question?’ Initial Criteria Developed By Students
  • Easy to answer
  • Meaningful / valuable
  • Genuine
  • Researchable
  • Can not be answered yes or no

Bohanan/Niemi/Wachtel

connecting questions evidence arguments revised criteria developed by students
‘Connecting Questions-Evidence-Arguments’ Revised Criteria Developed By Students
  • Simple and understandable
  • Investigator has an expected outcome
  • Methods are clear from the wording
  • Connected to other questions
  • Revision of initial question
  • Genuine: don’t already know the answer
  • Research is doable given tools, knowledge, and supplies
  • Sensible/meaningful; adds knowledge

Bohanan/Niemi/Wachtel

synthesis of classroom observations and interviews
Synthesis of Classroom Observations and Interviews
  • Initial arguments based on personal beliefs
  • Initial arguments based on single undocumented observations
  • Classroom discourse and teaching shifted arguments to evidence
  • Evidence includes documented observations, research of others, & empirical results
  • Repeatability of results

Bohanan/Niemi/Wachtel

changing students beliefs about evidence
Changing Students’ Beliefs About Evidence

Because I said so

Because someone told me so

Because an authority said so

Because I observed and documented

Because I conducted an experiment

Because I communicated my findings clearly

Because I created a model based on research

Because I only included evidence specific to my model

Summaries of classroom discussion and interviews with students to reflect changes in views of evidence over the course of the school year

Bohanan/Niemi/Wachtel

conclusions from classroom study
Conclusions From Classroom Study
  • Student research questions were more sophisticated when classroom design included discourse among students and also with content experts (e.g. ecologists, botanists, etc.)
  • Student research was more sophisticated and iterative when it was imbedded throughout the year rather than in isolated units of instruction
  • Students developed and revised models based on their research findings and used these to create arguments

Bohanan/Niemi/Wachtel

some general background
Some general background
  • Select an area or habitat that has some diversity of vegetation. Ideally this habitat would have some mix of grasses, broad leaf plants, shrubs, and trees.
  • What do you know about the history of your study site? Is it a remnant of a larger woodland? How has the land use changed near your site over the past 50 years?
  • How is the habitat managed (e.g. evidence of mowing grass, cutting trees or shrubs, application of fertilizer, herbicides, or pesticides)? What is your evidence and source(s) of information?
  • What are the annual averages of rainfall and temperature for your site? What is the annual average of snowfall for your site? What is your evidence and source(s) of information?
  • Has your site experienced a major windstorm, ice storm, flood, drought, or fire in the last 50 years? In the last 10 years? What is your evidence and source of information?
  • Does your site have an invasive organism? When did the invasive organism first appear? Where did the invasive organism come from? How did it get to your site?

Bohanan/Niemi/Wachtel

describing your site
Describing Your Site
  • Draw a map of your site. This may be a sketch, a detailed map that shows dimensions and topography, or a GIS map generated from GPS recordings.
  • What surrounds your site? Generally, describe the surrounding land that you can see from the middle of the site.
  • How would you generally describe the most obvious vegetation in your site? Wooded? Mostly shrubs? Mostly grasses and broadleaf plants?
  • How would you describe the soils in your site? Wet or Dry? Sandy? Leafy?
  • If most of the plants in your site were leafed out and you were sitting in the middle of the site, would it be sunny or shady?
  • Map the location of each tree and shrub on the map of your site. Include the location of patches or areas that are grasses and or broad-leaf plants.

Bohanan/Niemi/Wachtel

some initial research questions
Some Initial Research Questions
  • What types or species of trees, shrubs, grasses, or broad-leaf plants are present at your site? Which of these species of trees, shrubs, grasses, or broad-leaf plants are native to this area? Which are not-native to this area?
  • What are the relative abundances of the different types of trees, shrubs, grasses, or broad-leaf plants at your site? Which is the most abundant? Which is the least abundant?
  • What are the relative ages of the trees at your site? Size (especially the trunk diameter at chest height) is a relative indicator of age. Are most of the trees at your site larger and older or smaller and younger? Does this depend on which species of tree that you’re looking at (e.g. Burr Oaks compared to Silver Maples)?
  • Can you compare the diversity, relative abundance, and age of the trees at present with any historical information? If so, how have these aspects of the site changed from past – present?
  • Based on the species present at your site and what you know about their relative abundance, their relative age, and their environmental sensitivity (e.g. can that species survive, grow, and reproduce under a wide or a narrow range of conditions) which species at your site would be more vulnerable than others to invasive organisms? How? Why? What is your evidence?

Bohanan/Niemi/Wachtel

specific questions about garlic mustard
Specific Questions About Garlic Mustard
  • How has the distribution of garlic mustard changed following its introduction?
  • Is the density of garlic mustard increasing, decreasing, or staying about the same? Note opportunities to use management as a variable comparing managed and unmanaged areas.
  • Is garlic mustard affecting the growth, density, or distribution of other vegetation? Note this could be native and / or other invasive species.
  • Is garlic mustard affecting the phenology of any organisms in the habitat?
  • What habitat characteristics may increase or decrease opportunities or likelihood of future establishment after introduction? Opportunity to gain predictive insight with management implications or in other words what are some of the most vulnerable (in terms of susceptibility to establishment of garlic mustard) areas of the school forest.

Bohanan/Niemi/Wachtel