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Dora (13), Italia |
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TIPS for Teachers- |
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Because instruction and learning is different in problem based settings than traditional instruction, problem based learning provides a challenges for many instructors at student evaluation. Rather than focusing on facts, problem based learning often encourages active learning and growth towards self-directed learning:
Using only traditional tests are incompatible because they focus on factual knowledge and isolated skills (Ritchie, 1996). Embedded assessments provide teachers with a sense of students' thinking at various points in the sequence of the problem. They also prompt students to address relationships among important events and learning during the problem experience. Such ongoing assessments may take a variety of forms to fit the learner and the problem experience. Based on assessment results, coaches may redirect the problem through instructional events or work with particular students to aid their understanding of the whole and parts of the problem (Torp & Sage, 1998). This kind of ongoing assessment for learning places students within a dynamic framework of assessment events that are driven by four factors:
Multiple Types of Assessment in PBL With multiple purposes for problem-based learning, it is important to consider a variety of types of assessment opportunities. Traditional written examinations can be conducted either as closed-book or open-book examinations. Questions should be designed to ensure transference of skills to similar problems or subject domains (Ritchie, 1996). Much of the learning that goes on during problem based learning is more than just a compilation of facts. As such, written examinations may not be an adequate measure of student growth. Requiring students to generate concept maps, in which they depict their knowledge through the creation of identified nodes and links, may present another option to determine their cognitive growth (Ritchie, 1996). Because life outside the classroom usually requires working with others, peer assessment is a viable option to measure student growth. Providing students with an evaluation rubric often helps guide the peer evaluation process. This process also emphasizes the cooperative nature of the PBL environment (Ritchie, 1996). An important element of problem based learning is to help students identify gaps in their knowledge base in order for more meaningful learning to result. Self-assessment allows students to think more carefully about what they know, what they do not know, and what they need to know to accomplish certain tasks (Ritchie, 1996). The goal of assessment in problem-based learning is for students to understand the goals of the lesson and eventually be able to assess their own work. This type of self-assessment and the formative assessment allows the teacher to get feedback from which he can modify his instruction. Formative assessment is a must for problem- and project-based learning. Students must be given opportunities to participate reflective self-assessment and given a chance to make revisions based on the assessment (Torp & Sage, 1998).
The feedback provided by tutors should encourage the students to explore different ideas. It is important that facilitators not dominate the group--they should facilitate learning and exploration. Assessment should include comments about the individual's interaction with her group and her cognitive growth (Ritchie, 1996). Because so much of work life revolves around presenting ideas and results to peers, oral presentation in problem-based learning provides students an opportunity to practice their communication skills. Presenting findings to their group, the class, or even a real-life audience can help strengthen these skills (Ritchie, 1996). Written communication is another skill important for students. Requiring written reports allows students to practice this form of communication (Ritchie, 1996). The teacher is responsible for observing students and obtaining evaluative data about their strengths and areas that need improvement. Occasionally, the teacher should as students to summarize--individually, or in writing--the connection between a particular hypothesis and the available data without looking at the board. Students should also be evaluated with respect to their problem-solving skills, communication, and interaction with members of the group (Williams, 1992). Performance assessment is focused on students ability to apply knowledge in ill-defined, ambiguous contexts that demand judgment (Wiggins, 1993).
Linn, Baker, and Dunbar (1991) list the following key attributes for performance assessment:
It is important that students know what theyll be expected to do in long-range, and complex projects. Rubrics that describe quality expectations also help challenge students to do their best. Educators using instructional rubrics assess process, performance, and progress by delineating the various categories associated with assessment tasks and learning activities, the different levels of performance, and the indicators describing each level and then rating student performance that show their learning (Whittaker, Salend, & Duhaney, 2001). Instructional rubrics can benefit students by helping them do the following:
Also, rubrics can help teachers:
Guidelines for Using Rubrics (Whittaker, Salend, & Duhaney, 2001)
Becoming
a Coach
|Asking
Good Questions | Using
Journals in Project-Based Lessons |
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