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dwb.unl/ dwb/Meetings/WebG/WebGroup.htm

http://dwb.unl.edu/ dwb/Meetings/WebG/WebGroup.htm. Web-Courses for Chemistry Teachers. David Brooks, John Markwell, Marjorie Langell, Randy Emry, Kent Crippen, Karen Cohen, Helen Brooks

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dwb.unl/ dwb/Meetings/WebG/WebGroup.htm

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  1. http://dwb.unl.edu/ dwb/Meetings/WebG/WebGroup.htm

  2. Web-Coursesfor Chemistry Teachers David Brooks, John Markwell, Marjorie Langell, Randy Emry, Kent Crippen, Karen Cohen, Helen Brooks This material is based upon work supported by the National Science Foundation under Grant No. ESI-9819377. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

  3. Overview • Technical Mechanics • How it played in Boston

  4. Overview

  5. Automatic Testing • 24/7 • Mostly automatic • Often personalized feedback

  6. 15 Courses

  7. Periodicity; Energy & Matter; Thermodynamics; Chemical Equilibrium Bonding Carbon and Polymers Biomolecules; Molecular Biology; Energy & Metabolism Water and Solutions; Gases & the Atmosphere Acids & Bases; Redox Instrumentation Nuclear

  8. Topics • Content • Pedagogy

  9. Content • Principal Topics • Practical Applications • Science Integration • Math Integration • Home Labs • Graphing Calculator Lesson • Probes Lesson • Industrial • Simulation

  10. Pedagogy Inquiry, Descriptive, Safety Culture, Misconceptions, Environmental, Historical, Demonstrations, Experiments, Content Integration, Mathematics Integration, Graphing Calculators, Probe Experiments, Simulations, Special Emphasis, Resources

  11. Stress on integration of ideas across areas and disciplines.

  12. Technical Mechanics • iMac • WebStar • HyperCard

  13. Supporting Interactivity Create Web Form Action includes HC.cgi WebStar gets input from form WebStar creates AppleEvent HC script responds to AppleEvent Information passed to HC HC processes information using scripts HC replies -- usually with a ‘calculated’ Web page

  14. HC Schematic

  15. Questions • Essay • Blank • Short • Multiple Choice • Rank • Check (multiple multiple choice) • Multiple Label • Match

  16. Essay Essay items required ‘hand’ grading. Model answer provided immediately; evaluation delayed.

  17. Short Short answers were programmed individually to offer varied problems appearances and individualized feedback. Answers included worked-out solutions using the particulars of the problem presented to the student.Feedback immediate.

  18. Other formats Immediate feedback.

  19. Topic System revolved around topics. Content stored by topic. Assessment items attached to topics.

  20. Format Three frames. Top bar for navigation; of minimal use. Left frame accessed topic. Right frame contained content, links, buttons to access items. Pages calculated -- one topic at a time --for each individual.

  21. Progress Information Links to topics in left frame always active. However, as student works through materials and completes quizzes, links to content with no remaining quizzes turns gray. Quiz buttons disappear.

  22. At Log-On Time Student sees all comments connected to essays, and learns results of essay evaluation. Color coded. Must be read.

  23. Pages Written Pages written to files. File names encoded with scrambled 4-letter block. Necessary to overcome HC 30K limit.

  24. Instructor Access Instructor sees list of all students. Sees indication of # chars to be read. Clicks to access. Sees on items at a time. Grades P/F on each essay item. Makes comments in scrolling text field. Has date information on student. Has e-mail link to student. Sees color codes when >=93% items complete.

  25. Files Types (Stacks) Student Records Courses

  26. Student Records Three types of records: Student demographic Mentor demographic, student list Course enrollment

  27. Course Files (Stacks) Topics Quiz Items

  28. Course Record Tracks individual items per student. Student logs on. Gets list of items remaining. Goes to course stack. Writes remaining items with topics. Creates new page, topic by topic, deciding link colors and ‘buttons’ based upon remaining items.

  29. On-Line Administration Add student Name, e-Mail address. Created id name and password. Add mentor Add course enrollment id name, course desired

  30. Link Rot Link rot was our biggest problem. Depended upon accessing extant material rather than creating material. Develop rot reporting and management tools.

  31. Outcomes

  32. Participants 106 teachers from 27 states earned 508 credits in 15 courses

  33. Tuition Impact During the period 3/1/02 through 4/30/02, participants completed 30 courses. On 2/27/03, participants with ongoing active enrollments were informed that the free-tuition aspect of the program would end on 4/30/03. During the period 3/1/03 through 4/30/03, participants completed 139 courses.

  34. Credits per Teacher

  35. Drop-Out/No Show Everything is public, including all assessments. 147 teachers signed up but did little/nothing. There were 747 course registrations, but only 508 completions. This was a surprise. This is not costly.

  36. Mentors (Instructors) Brooks -- 574 Markwell -- 91 Rest distributed among 20 mentors

  37. Credit Choice 416 in science (CHEM, BIOC, BIOS) 92 in education (CURR)

  38. Skills Varied Many highly skilled -- preaching to choir Many low skilled. Full gamut of skills. ALL indicated some learning.

  39. Integrity Could use public site in parallel. Detected this by recording time/id/IP address. A few instances detected.

  40. Time to Complete 685 days record long. 2 courses in one evening was record short. Took about 5 hours. When you think about this, it is not crazy that a person could learn something, review successfully, and do this in an afternoon-evening.

  41. Questions

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