Math Week 2 DQR

Sean Aldridge

Good afternoon everyone,

I chose to watch a video on Compound Inequalities because, during the first week, I had the most issues on this topic. You can find the video I watched at  

During the first week's module on compound inequalities, I could not understand the difference between an "and" and an "or" inequality. If the question stated "and" or an "or," I could solve the problem with no issues. When the problem did not say if it was an "and" or an "or," I had issues. I watched the video lesson on LimeSpring multiple times and watched other videos I found on my own, and I still do not understand how to choose if the answer is an "and" or an "or." 

This Khan Academy video gave two examples of "and" and "or" problems, but just like all the other videos I watched on this topic, it identified whether the problem was an "and" or an "or" at the beginning and didn't explain how to decide which it would be. I know I am missing something while watching videos on this topic and will hopefully understand at some point. 

Response –

Judy Richardson

It’s been well over 15 years since I have taken a math class.  During the week 1 lesson and quiz I struggled with completing the exponent portion of the class. Failing to correctly solve a portion of a math problem ultimately ends with receiving the wrong answer which could result in pass/fail on a test.  My struggles with exponents led me to looking for additional resources.  The handy helper that I found most useful is on exponents, specifically the Khan Academy’s Intro to Exponents.   I like how the Khan Academy’s website explains the different parts of the problem (the base and the exponent).  I struggled with correctly completing the multiplication portion of the exponents.  I love that the website shows the user how to solve the problem by breaking down the multiplication process into steps.  The website also offers a wide variety of practice problems for the user to complete to gain a better understanding of the concept.  Some of the practice material includes problem that involve working the decimals and fractions.  The one thing that I do not like is the location of the actual handy helper’s document.  I found it hard to find the first couple of times I needed it.  I ended up adding it to my favorites to make it easier on me.  I would recommend maybe placing a link to the handy helper document in an announcement to make it easier to find in the future.   I found that this site may be helpful to others who have not taken a math class in a while and forgotten the more basic concepts of algebra. 

If you would like to learn more about exponents, check out the Khan Academy’s Intro to Exponents at . 

Response –