##### Math 220 Menu

## Math 220 Wk 3 - Systems of Equations & Matrices

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#### LEARNING TOPICS -- CONCEPT MINI-LECTURES

[+]#### HANDOUTS (PDF)

[+]#### TUTORIALS

[+]#### ANIMATED GIFS ON GRAPHING

[+]#### ONLINE CALCULATORS

[+]#### STRUGGLING? HERE ARE FOUR TIPS

[+] MML STUDY PLAN#### MINI-MOVIES (11 MASTERY POINTS) CC

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MML CHECKPOINT
#### MINI-MOVIES (10 QUESTIONS) CC

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#### USING A GRAPHING CALCULATOR

[+]#### ACCESSIBILITY

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#### TI-84+ CALCULATOR TUTORIALS

[+]#### MINI-MOVIE PLAYBACK CONTROL BAR

#### What Are the Mini-movies?

- Math 220 Home
- Wk 0 - Welcome to My Class
- Wk 1 - Radicals, Rational Exponents,

Distance, & Midpoint - Wk 2 - Exponential & Logarithmic

Functions - Wk 3 - Systems & Matrices
- Wk 4 - Arithmetic & Geometric

Sequences & Series - Wk 5 - Counting & Probability

Note that a graphing calculator is

**NOT** required but is especially helpful

in this class. I will be using a

TI-84 C (color) in my mini-movies.

Click the heading to the left titled

USING A GRAPHING CALCULATOR

for alternatives to purchasing a TI-84.

Join my site for full access

to all resources for Math 220.

One time payment of $9.95.

To my students: You will be given

a FREE account to my website.

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[+] MML STUDY PLAN

Solve linear systems in two variables by substitution.

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Solve linear systems in two variables by addition.

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Solve linear systems in two variables by the method of your choice.

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Solve applications

Solve nonlinear systems in two variables by substitution.

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Solve nonlinear systems in two variables by addition

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Solve nonlinear systems by method of your choice

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Solve problems using nonlinear systems

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Solve applications

Graph systems of inequalities.

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Solve applications

Use matrices and Gaussian elimination to solve systems.

Perform matrix operations.

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Solve applications

- Solve linear systems using substitution (5.1.7) 2 min 44 sec Transcript
- Solve linear systems by addition (5.1.23) 1 min 28 sec Transcript
- Solve linear systems by method of your choice (5.1.35) 2 min 5 sec Transcript
- Solve applications (5.1.55) 1 min 27 sec Transcript
- Solve nonlinear systems by substitution (5.4.3) 2 min 27 sec Transcript
- Solve nonlinear systems by method of your choice (5.4.29) 3 min 47 sec Transcript

INSTRUCTOR TIP FROM JOLENE: Order of your solutions does not matter; however, MML will mark the answer wrong if you forget commas.

- Use matrices & Gaussian elimination to solve systems (6.1.25) 1 min 22 sec Transcript
- Use matrices & Gaussian elimination to solve systems (6.1.57) 2 min 25 sec Transcript
- Perform matrix operations (6.3.11) 19 sec Transcript
- Perform matrix operations (6.3.29) 14 sec Transcript

INSTRUCTOR TIP FROM JOLENE: Careful when entering your answer. Use the matrix template on the toolbar at the bottom of the screen to get the matrix square brackets. Do not type the square brackets from the keyboard. MML will mark your answer wrong if you type [ ] instead of using the matrix template.

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I am in the process of adding closed captions to all my mini-movies, but since I have several thousand
mini-movies on my site, this will take quite some time. All pdf documents are available in their original Word format for those who need to read
the math equations with a screen reader. As I learn how to make my site more accessible, I will add these features. If you are a member of my
site and need accessibility, please contact me via e-mail at
jolene@jolenemorris.com and we'll work out something until my site is fully accessible.

As I create new mini-movies, I have been including the closed captions and transcripts. But each day I go back and add closed captions and
transcripts to at least one mini-movie. To understand the scope of this problem, I have over 5,000 mini-movies on my website. If I do only one
mini-movie per day, this conversion will take over 13.5 years!! As such, I am working on highest priority mini-movies first, and I am looking
for alternate ways to add captions and transcripts to existing mini-movies.

Closed captions are word-for-word translations of the mini-movie, while transcripts are "descriptive" transcripts to reflect not only the voice
but the visual component of the video. Coming soon: A web page with non-graphical links to all descriptive transcripts for each course.

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What are the mini-movies? The mini-movies are marked with a
icon. They are MP4 video files that contain a teaching
presentation with an audio track. These were recorded in my
office (not in a live lecture) so they are short, but very dense
with compact information. Movie
controls are available so you can replay, pause, and skip
sections.

At times, a mini-movie may stop abruptly in the middle
of play or it might not load at all. The website bandwidth that
I pay for only allows 3-4 movies downloaded at a time. So if your
mini-movie stops in the middle or won't download properly, refresh/reload
your browser window and it should work.

Maintained according to Earthlink Publishing Guidelines by Jolene M. Morris

©2018 Jolene M. Morris - All rights reserved

Last updated on 01/10/2018 04:06:56 PM (EST)