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AP ES Lab and Field Activities: Rationale and Background, Part II
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by Dean Goodwin
Director of Environmental Education AP Environmental Science Kimball Union Academy Meriden, New Hampshire
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|  | The AP ES Lab Advisory Group
Criteria to Take into Consideration when Producing Labs for the AP ES Course
Format for Producing Labs to Post on the Web
The AP ES Lab Advisory Group
An AP ES Lab Advisory Group met on March 29, 2003, in Philadelphia, Pennsylvania. The following list of participants agreed to be part of the Phase I discussions on the lab project for AP ES teachers.
Dean Goodwin, Kimball Union Academy, New Hampshire (chair)
Kathleen deBettencourt, Environmental Literacy Council, Washington D.C.
Janet Lanza, University of Arkansas at Little Rock, Arkansas
Angela Morrow, University of Northern Colorado, Colorado
Ed Wells, Wilson College, Pennsylvania
Annie Maben, AP science coach, Los Angeles County Department of Education, California
Lonnie Miller, Golden West High School, California
Lee Palmer, Bryn Mawr School, Maryland
Beth Nichols (ETS, Princeton, New Jersey) and Marty Fossett (chemistry lab editor, AP Central) joined the group for the morning session of discussions.
The main objectives for the day were to determine what parameters constitute a good environmental science lab for AP teachers and to produce a format that can be used to post suitable labs on the Web. The meeting was most productive, and after a lively brainstorming discussion, the group agreed upon certain criteria that would be characteristic of a good AP ES lab. A main point of consensus quickly became apparent: that the labs should have a strong emphasis on inquiry-based learning. They must involve a degree of student input and move away from the typical "cookbook" style experiments common in many lab manuals.
Criteria to Take into Consideration when Producing Labs for the AP ES Course
The advisory group suggested the following list of parameters and general guidelines.
The labs should:
- Have a strong collaborative or cooperative learning component and include elements of experimental design. This enables students to have input into the lab activity, possibly through working as part of a research team, and to develop an understanding of independent and dependent variables, the importance of a control group, keeping other variables constant, etc.
- Be open-ended insomuch that the students are posed a question to answer and, through an inquiry-based approach, are empowered in the decision-making process of designing a lab that could lead them to potential solutions. Lab techniques are then taught in the context of answering a problem-question, requiring active student participation rather than the passive student involvement that is indicative of many "off-the-shelf/cookbook" labs.
- Exemplify the scientific method through observation, construction of hypotheses, experimental design, and the collection and analysis of student-generated quantitative data. Students should be able to communicate their results through a number of different formats -- for example, using graphs, charts, and/or tables; using oral, poster, and/or PowerPoint presentations; or producing a written paper or formal lab report. This enables students to incorporate skills that would be applicable and/or testable on the AP ES Exam, such as dimensional analysis, the construction and interpretation of graphs, suggestions for experimental design to test a hypothesis, etc.
- Be appropriate and relevant for a particular topic, principle, or process and cover it scientifically to reinforce one of the major themes of the AP ES course. It should not try to accomplish too many goals in one go, as this could become confusing. Rather, the lab should incorporate a capstone idea that connects it directly to the content topic in the lecture/classroom portion of the course, providing an opportunity for the experiential application of a classroom concept.
- Support fully the objectives and guidelines outlined in the lab section of the Course Description and be interesting and enjoyable for both teacher and students to perform.
- Be applicable to carry out over a wide geographic location around the country and in different ecological areas. Suggestions to make the lab pertinent to different regions could be included where necessary -- for example, a different scenario for the problem question could be included after being modified based on a given region.
- Use the local surroundings of the school for field work, involving both terrestrial and aquatic studies and incorporating a hands-on experience with the appropriate field equipment. Relevant applications of the collected data to real life allow students to make connections with human concerns that could be linked to issues more global in nature.
- Use supplies, test kits, and equipment that are readily available and easy to locate and/or obtain from a named supply company. The use of these materials must be cost effective and affordable to most school budgets. Ideally, the materials being used should be expedient to set up, provide reliable data, and introduce a specific lab skill or technique to students. The materials could incorporate as much of the latest apparatus, technology, or instrumentation as is feasible.
- Be able to be completed in a stated time frame, either in a certain number of class periods or over an extended time period over several weeks or as part of an ongoing study. The time frame should be clearly indicated and include where any breaks occur in the lab or how it is broken down over several class periods, days, or weeks.
- Have clear, simple, easy-to-follow instructions that work and also provide sufficient background for teachers to follow -- for example, teacher tips on using the test kit or equipment and prelab instructions and hints on the lab setup. These need to be as self-explanatory as possible so that any teacher, whatever their background, could be successful when conducting the lab, including any links to Web sites for background information and references to any similar labs found elsewhere.
- Have high levels of expectation that are appropriate for an AP- or college-level lab experience. Assessment should involve testing a student's knowledge with a higher-order level of questioning that does not just rely on recall and/or comprehension, but promotes analytical and critical thinking. For example, students could suggest further studies or investigations that can be performed as an extension to the lab they have conducted. The students could also produce their own set of discussion/analysis questions to answer in relation to the lab.
The advisory group also recommended that each lab posted on the Web sites should include:
- A list of desired student outcomes and learning objectives.
- A teacher help section that would give background on, for example, safety and disposal hints, grading rubrics, using Excel and/or PowerPoint, and tips for good poster and/or oral presentations. This section would also include sample data/results that have previously been obtained for the lab that teachers could use as a reference.
- A reference as to how the lab links to the National Science Education Standards. Although most college lab programs may not take these into account, it was felt that because this is a college-level course being taught in the high-school arena, and state science standards vary so widely, the National Standards would be a good yardstick by which to measure student outcomes and objectives. This is in keeping with the latest science teaching strategies in precollege education.
Format for Producing Labs to Post on the Web
The advisory group developed a common format that could be used by teachers when producing labs to post on the Web. The format is comprised of two sections. The first is a student section that a teacher can download, print, and copy for distribution to the class. The second section is a more detailed description, for use by the teacher, of setting up the lab for students to conduct. It contains information regarding materials, suppliers, teaching tips, and other pertinent details. Following a standardized, common format will help teachers when they develop their own AP Environmental Science labs and encourage them to produce labs that can be posted on the Web sites of the College Board and the Environmental Literacy Council. The goal is to have AP ES teachers continually add to the set of labs that have been initially produced and posted.
The Student Lab Template would include:
- Title
- Author, affiliation
- Abstract
- Lab objectives
- Introduction
- Background research information links
- Materials
- Procedure
- "Your assigned task is..."
- Lab tips (on equipment or procedures)
- Data/observations
- Analysis
- Additional resources
The Teacher Lab Template would include:
- Title
- Name, affiliation
- Lab objectives
- Why use this lab in the AP ES course?
- Correlation to topic outline in the Course Description
- Correlation to National Standards
- Introduction
- Group size
- Lab length
- Preparation and prep time
- Materials/equipment
- Suppliers
- Safety and disposal
- Teaching tips:
- Link to student assignment
- General tips (relating to the procedure or process)
- Potential problems
- Student misconceptions, problems with procedures, etc.
- Possible variations
- Sample data set
- Data graphing and analysis
- Postlab analysis and typical discussion questions
- Possible assessments (at least one example per lab submission), in alphabetical order:
- Concept/thinking maps
- Critical-thinking questions (with answers)
- Group poster presentation
- PowerPoint presentation
- Formal lab report creation
- Good class discussion
- Oral presentations
- Other creative ways of showing that students understand the results
- Sample rubric(s) for assessment(s)
- References/resources (texts and Web links)
- Glossary (if any terms need extra explanation)
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