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A demo of free essay scoring software Levels: 6-12 PS 117

A demo of free essay scoring software Levels: 6-12 PS 117. Roy B. Clariana – Penn State U. RClariana@psu.edu http://www.personal.psu.edu/rbc4 Casper College January 14 th , 2006. Presentation Goals.

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A demo of free essay scoring software Levels: 6-12 PS 117

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  1. A demo of free essay scoring software Levels: 6-12 PS 117 Roy B. Clariana – Penn State U. RClariana@psu.edu http://www.personal.psu.edu/rbc4 Casper College January 14th, 2006

  2. Presentation Goals • This presentation will demonstrate how to download and use a software tool called ALA-Reader to score students’ biology essays • To recruit action researchers from this audience

  3. Personal Profile • High school math and science teacher in the US and Kenya (4 years) • Energy and environment education curriculum developer • Elementary school technology coordinator (5 years) • Technology education consultant for 50 schools in Colorado, Wyoming, and Utah (3 years) • Director of a technology integration project in the United Kingdom (1 year) • Software development project lead – software, tools, web-based tools (1 year) • Penn State – Associate Professor (9th year)

  4. Presentation flow • Quick ALA-Reader demo – to see it work • Brief look at its genesis and how it works • Step-by-step demo – how you set it up and use it in your classroom Monday morning • Review the data files produced • One more run • Final questions, Show of hands

  5. Quick ALA-Reader Demo • Place student essays, terms file, expert referent essay, and ALA-Reader software into the same folder (click) • Double click ALA-Reader • Click the Mark L button • Type in the file name of a student’s essay • Observe scores

  6. Genesis of ALA-Reader • We are interested in concept maps, and developed software called ALA-Mapper to score concept maps • We noticed that teachers associate concept maps and essays. (i.e., concept maps are a good organization tool.) • So we developed ALA-Reader to score essays based on ALA-Mapper

  7. Concept map validity Concept maps are generally considered to be valid and reliable measures of science content knowledge (Ruiz-Primo, Schultz, Li, Shavelson, CREST in California, Rye and Rubba (2002), Jonassen, Beissner, & Yacci, 1993. . .). multiple-choice essays tests

  8. What raw data can a computer “extract” from a Concept map? • Term counts – in open-ended maps, were all of the required terms included • Propositions – a line (link, edge) connecting two terms • Link labels – the labels on the line • Associations – geometric distance between pairs of terms. Small values indicate stronger relationship.

  9. left atrium right ventricle pulmonary vein pulmonary artery lungs deoxygenate oxygenate Semantic Map .. map w/ proposition array (n2-n)/2 pair-wise comparisons Proposition Array Most studies use only link (edge) information, usually called “propositions”.

  10. .. map w/ association array . left atrium right ventricle . pulmonary vein . pulmonary artery . S-Mapper lungs . . deoxygenate oxygenate . Concept Map Association Array

  11. Convert raw map data into scores • Currently, we use a data reduction and comparison approach called Pathfinder network representation (UNM, Schanveldt, 1990). • PFNets describe the least weighted path to connect the terms in the data proximity array • Scores are established by comparing the participant’s PFNet to a referent (expert) PFNet, and calculating the number of common links (the intersection)

  12. We use the same approach for ALA-Reader Text PFNet … an electrical signal starts the heartbeat, by causing the atrium to contract. The blood then flows through the pulmonary valve into the pulmonary artery and then into the lungs. Once inside the lungs, the blood gives up the carbon dioxide (cleansed) and receives oxygen. This oxygenated blood … atrium contract P valve P artery lungs cleansed oxygenated Proposition array

  13. Our papers on concept maps and essays • Add cmc conference paper • Koul, R., Clariana, R. B., & Salehi, R. (2005). Comparing several human and computer-based methods for scoring concept maps and essays. Journal of Educational Computing Research, 32 (3), 261-273. link • Taricani, E. M. & Clariana, R. B. (2006). A technique for automatically scoring open-ended concept maps. Educational Technology Research and Development, 54, 61-78. • Clariana, R.B., Koul, R., & Salehi, R. (2006). The criterion-related validity of a computer-based approach for scoring concept maps. International Journal of Instructional Media, 33 (3), in press. • Poindexter, M. T., & Clariana, R.B. (2006). The influence of relational and proposition-specific processing on structural knowledge and traditional learning outcomes. International Journal of Instructional Media, 33 (2), in press.

  14. Step-by-step • Create the writing prompt • Students write essays, when done, they save it in a specific format • Teacher creates key terms with synonyms and saves as terms.txt • Teacher creates one or two expert referent essays • Put all into the same folder and run ALA-Reader • Collect scores from the report file

  15. Step 2. Student essay file format The Dance of Life Student 5 The heart is the major component of the circulatory system. Its function is to circulate blood, which is comprised of both blood cells and plasma, throughout the body. Two types of blood vessels are used to circulate blood. Arteries are used to carry oxygen rich blood throughout the body, while veins are used to carry oxygen deficient blood to the heart. The heart is one of the most complex organs in the body. One of its primary jobs is to oxygenate blood for the body. Here is how it works. As stated earlier, veins carry oxygen deficient blood to the heart. The blood flows into the right atrium, then the right ventricle, and then the pulmonary artery pumps blood to the lungs for oxygen. Once the blood is oxygenated, pulmonary veins carry blood back to the heart, where it flows from the left atrium to the left ventricle. The aorta pumps oxygen rich blood throughout the body, then the veins carry oxygen deficient blood back to the heart, where the cycle begins again. Quite literally, the heart is “the heart” of the circulatory system. It is amazing to think that such a seemingly simple organ is so complex. 30 max

  16. Step 3. create terms.txt file aorta aorta aortic_valve aortic_v body body cleanse clean carbon contract contrac diastolic diastol endocardium endocar epicardium epicar inferior_vena_cava inferior left_atrium left_atri left_ventricle left_vent lungs lung membranes membran mitral_valve mitral bicusp atrioventricular myocardium myocard oxygen oxygen pericardium pericard pulmonary_artery pulmonary_art pulmonary_valve pulmonary_val pulmonary_veins pulmonary_vei relax relax right_atrium right_atri right_ventricle right_vent superior_vena_cava superior systolic systol tricuspid tricusp • 30 terms maximum • Space to separate synonyms • _ to show spaces 30 max full pattern

  17. Step 4. create expert1.txt file Heart Essay Expert 1 Blood flows from the extremities towards the inferior vena cava and superior vena cava. Blood enters the right atrium from the inferior vena cava and superior vena cava. Flow passes from the right atrium through the tricuspid valve to the right ventricle. From the right ventricle, blood flows oneway through the pulmonary valve onto the pulmonary artery. The blood flows through the pulmonary artery to the lungs where it is cleansed and oxygenated. Blood flows from the lungs back to the heart through the pulmonary veins. Blood then enters the left atrium from the pulmonary vein. Flow passes from the left atrium through the mitral valve into the left ventricle. Blood then flows out of the heart through the aortic valve into the aorta. The blood in the aorta flows to all parts of the body. contract and systolic diastolic and relax membranes endocardium and myocardium epicardium and pericardium 30 max

  18. Step 5. Run ALA-Reader • Place student essays, terms file, expert referent essay, and ALA-Reader software into the same folder (click) • Double click ALA-Reader • Click the Mark L button • Type in the file name of a student’s essay • Observe scores

  19. Step 6. Use scores • See report.txt or L_report.txt

  20. ALA-Reader future • Current beta version forms proposition array based on sentence-level and also linear associations • Add other ways to parse the text, e.g., pure linear, reverse linear, double-chunk, etc. • Add a graphing utility to the tool • Download from my web site at www.personal.psu.edu/rbc4

  21. Questions • Questions • Show of hands… • One-on-one after the session, also email me with any questions, etc.

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