Acids and Bases StAIR
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Acids and Bases StAIR


Acids and Bases StAIR

Logo for Acids and Bases StAIR
Here you will find a stand alone resource that will guide you through how to simply identify an acid or a base based on their chemical formula.  In addition, the tutorial guides you through how to identify inorganic acids, oxy-acids, and carboxylic acids based on chemical formula.  Finally, there are 2 short quizzes throughout the tutorial that challenge your knowledge of acids and bases to see if you have learned from the tutorial or not.
Material Type: Tutorial
Technical Format: HTML/Text
Date Added to MERLOT: June 07, 2011
Date Modified in MERLOT: June 20, 2011
Submitter: Chris Hren
Keywords: Acids and Bases, Chemistry


  • Reviewed by members of Editorial board for inclusion in MERLOT.
    Editor Review (not reviewed)
  • User review 4 average rating
  • User Rating: 4 user rating
  • Discussion (2 Comments)
  • Learning Exercises (none)
  • Personal Collections (none)
  • Accessibility Info (none)


Primary Audience: High School, College General Ed, College Lower Division
Mobile Compatibility: Not specified at this time
Technical Requirements:
Language: English
Cost Involved: unsure
Source Code Available: unsure
Accessiblity Information Available: unsure
Creative Commons: unsure


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Discussion for Acids and Bases StAIR

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Avatar for Tammie Mirolli
3 years ago

Tammie Mirolli (Teacher (K-12))

Your StAIR is similar to what I am looking to do in my classroom next year.  The "Flipped Classroom"  uses video screenscasts to present lecture notes and practice problems to students.  But these videos are viewed as homework, and then classtime is used for group work, labs, and hands on activities under the guidance of the teacher.  I am excited about trying this and your video is very similar to the videos I have seen from other teachers already using the flipped classroom method.

I tried a unit of video screen casts with my students, but I had just recorded my PowerPoint presentation with voiceover.  Many of my students commented that they would like to have a video of me included with the video.  So I think the video of you helps to engage and connect the students to the material.  Also the students stay focused when they are able to see you.  I know I preferred being able to see you as you worked through the problems.

I like how you broke down the types of acids.  I felt your explanation was very easy to follow, and it should be very clear to students how to identify the different types of acids based on the elements that make up the acid.  I liked your method of explanation so much that I will be using the same explanation with my own students next year.

Modeling how to indentify the types of acids and bases is very important. I think using examples and working through the worksheet is a great way for students to develop the thought process involved in determining whether the substance is a acid or base, and what type of acid it is.  Just giving students the rule would not be as effective as you showing them your thought process when determining acid or base identity.

Technical Remarks:

The one thing that really stood out to me was the placement of your video box.  I felt that it cut off portions of the worksheet and the material you were writing in.  I think if you placed the videon on the bottom right corner and then moved your worksheet up as you worked, would help students to see everything you are doing on the screen.

I agree with Jessica in terms of you leaving the video screen when working on the problems.  Repositioning the camera my make it easyer for you to stay in frame during the whole tutorial.

Finally, on the first quiz,  I tried to fill in the blank on the last question and could not.  I am on a MAC and I don't know if I don't have the proper plug-in or software for me to complete the question.

Time spent reviewing site: 45 minutes

Avatar for Jessica Haggerty
3 years ago

Jessica Haggerty (Teacher (K-12))

Great lesson!  I like that you broke down the three types of acids and gave examples of each.  I thought the pace at which you worked through the lesson was good for both students using the tutorial as a review and those who were learning the information for the first time.

My only comment about the material is that you may want to mention the other common types of bases, like carbonates and amines, that exist even if you don't use them in class.  That way when the students move on in chemistry they are aware that there are more than just hydroxide bases even if they don't know exactly what they are.

Technical Remarks:

This is more just a preference thing than anything else, but whenever you go to write, you are out of your camera screen shot.  This may be what you were trying to but it may be beneficial to zoom out a little on your camera to not distract the students.

The only other remark I would make it that when I put in incorrect answers for the quiz questions, as a student just learning about acids/bases, I am not sure I would understand what was incorrect about my answers.

Time spent reviewing site: 30 min