1 / 10

Scaffolding a Conceptual Understanding of the Gas Phase in General Chemistry Enriched with Technology

Scaffolding a Conceptual Understanding of the Gas Phase in General Chemistry Enriched with Technology. Scott A. Sinex and Barbara A. Gage Department of Physical Sciences and Engineering Prince George’s Community College.

kaleb
Download Presentation

Scaffolding a Conceptual Understanding of the Gas Phase in General Chemistry Enriched with Technology

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Scaffolding a Conceptual Understanding of the Gas Phase in General Chemistry Enriched with Technology Scott A. Sinex and Barbara A. Gage Department of Physical Sciences and Engineering Prince George’s Community College Presented at the 230th National Meeting of the American Chemical Society in Washington, DC on 28 August - 1 September 2005.

  2. Liquids and IMF’s Your objectives in gases… • Behavior and properties of gases • Introduce the ideal gas law and combined gas law • Finding molar mass and gas density • Kinetic-molecular theory • Real gas behavior ...but we don’t want to lecture!

  3. What & Why? • Discovery laboratory experience • Build and extend qualitative into quantitative mathematical relationships • Extend knowledge from ideal gases into real gases after covering liquids and intermolecular forces • All steps enriched by using technology • Student- or learner-centered activities

  4. How? or Technology involved... • Webpage with links and pdf handouts • Multi-layered Interactive Excel • Animations as • Flash from Odyssey • NetLogo Java applet • Movie from SnagIt(screen-capture software) The complete package of materials: http://academic.pgcc.edu/psc/chm101/ideal_gas

  5. V P The Behavior of Gases • Laboratory activity (<2.5 hours) • Macroscopic behavior • Mostly qualitative relationships • P-V experimental data collected PV = k Our complete General Chemistry I lab manual.

  6. The scaffold... Post-laboratory student- centered computer-based activity with discussion Discovery-based laboratory activity

  7. The Ideal Gas Law • Interactive Excel spreadsheet • Graphical analysis and interpretation • Quantitative symbolic relationships (P-V-T-n) • Influence of error • html document with animations • pdf printable version as handout • Microscopic aspects incorporated using Odyssey® converted to Flash files and NetLogo Java applet • Dropdown menu with selected numerical answers Link to web activity

  8. Outcomes for students... • Many experimental observations and predictions • Relating macroscopic and microscopic behavior via animations • Symbolic relationships derived • Many “what if” scenarios via numerical experimentation • Effects of “constant variables” and error

  9. Student responses… • Survey students on the use of the technology • Pre- and post-assessment of concept understanding

  10. For further information… • The complete activity online - click here • Constructing an interactive Excel spreadsheet – click here • Scott Sinex • ssinex@pgcc.edu • http://academic.pgcc.edu/~ssinex • Barbara Gage • bgage@pgcc.edu • http://academic.pgcc.edu/~bgage

More Related