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MERLOT II


    

Peer Review


Endocrine System Part 2

 

Ratings

Overall Rating:

4.5 stars
Content Quality: 4.5 stars
Effectiveness: 4.25 stars
Ease of Use: 4.5 stars
Reviewed: Mar 30, 2014 by Biology Editorial Board
Overview: This is the second part of a series of slide presentations on YouTube focusing on the endocrine system. It immediately continues from the first part of the series by describing the action of protein-based hormones on target cells. In this series, protein-based hormones include polypeptides, glycoprotein and amines. First, a generalized example of signal transduction is given followed by the example of epinephrine. The presentation ends with emphasizing the benefits of amplification utilized in secondary messaging systems. The presentation is 11.5 minutes long. YouTube has automatically created a transcript, but because of the biological and chemical terminology it is grossly inaccurate and should be avoided. This is the second presentation in the series on endocrine system by Mrs. Coleman for AP Biology classes. It introduces the concept of receptors and describes the mechanism of action of protein-based hormones on the target cells. Simple, step by step explanation of a secondary messenger system is given. The presentation also illustrates the benefits of a secondary messenger system.
Learning Goals: None provided. Reviewer identified learning objectives include:
  • Understand the signal transduction mechanism of protein-based hormones on target cells
  • Describe the benefits of secondary messenger systems
After completing this presentation, the learner would be able to:
  • explain the role of receptors in the functioning of protein hormones
  • describe a second messenger system
  • recognize the benefits of a second messenger system
    Target Student Population: Freshman, undergraduate courses High school and college up through junior year.
    Prerequisite Knowledge or Skills: Understanding of cell biology, receptors and hormones. None.
    Type of Material: Presentation
    Recommended Uses: Educators. Can be used in class to enrich the learning experience. Can be recommended for supplemental use in the course.
    Technical Requirements:
    • Adobe Flash Player 10.0.22+ plug-in
    • Firefox 1.1+, Internet Explorer 7.0+, Safari 1.0+, Google Chrome, or Opera
    • Broadband connection with 500+ Kbps
    • Ability to play YouTube videos

      Evaluation and Observation

      Content Quality

      Rating: 4.5 stars
      Strengths:
      • Information is slowly built as the narrative goes on
      • Slides are high quality
      • Contents are clear and concise
      • Includes an adequate amount of material
      • Contents cover core curriculum within the discipline
      • Integrates the concept very well
      Concerns:
      • Not informed by scholarship
      • Provide learning objectives or overview of what the presentation will cover (e.g. in the example with epinephrine, it should be stated that the receptor subtype for the example is a Beta receptor. Alpha receptors do not use the Gs pathway).

      Potential Effectiveness as a Teaching Tool

      Rating: 4.25 stars
      Strengths:
      • Short, only two major concepts presented
      • very efficient; could learn a lot in a short time
      • builds up on prior concepts
      • demonstrates relationship between concepts
      • simple diagrams allow easy understanding of the core concepts
      Concerns:
      • Narration does not include an overview of the presentation or identify specific learning objectives for the user
      • If transcript is used by individuals with auditory impairments, they will be completely confused
      • Does not identify learning objectives
      • Does not provide activities to reinforce concepts

      Ease of Use for Both Students and Faculty

      Rating: 4.5 stars
      Strengths:
      • As simple as watching a YouTube video
      • Easy to use
      • Self-contained
      • Presentation clearly designed
      Concerns:
      • Transcript is not accurate
      • Not interactive

      Other Issues and Comments: None.