Tuesday, February 17, 2015

Join one of my K.A. classes. And use a name on your profile (not a number).

Class codes to join my classes on Khan Academy (if you have not done so).  

Also please make sure to use your name on your profile (not a number or nickname) so that I know who is in my class. Thanks!


Alg 1. Batista Class code: QYNXQX

Alg 2. Batista Class code: S3V5YQ

Algebra Basics Batista Class code: 4BAZ5E

Pre-Algebra Batista Class code: SZZPTS

Math (overall) Batista Class code: BUE4D4

  1. Directions to join a class...

  2. Sign up at khanacademy.org (or log in with their existing accounts)

  3. Visit khanacademy.org/coaches

  4. There, in the "Add a coach" field, enter the class code…

Also please make sure to use your name on your profile (not a number or nickname) so that I know who is in my class. Thanks!

Saturday, February 7, 2015

videos 5.8 to 6.3


Lesson 5.8, objective 1, p285 – 287, ex 1-3.

Using quadratic formula.  http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-298s.html 

Using quadratic formula to find complex solutions.  http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-564s.html

 

Lesson 6.1, objective 1 and 2 .

A.      Classifying polynomials. http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-263s.html

B.      Modeling data using calculator. http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-565s.html 

C.      Using a model to predict values (application) http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-566s.html

 

6.1 D .    Linear regression on TI-83 (follow the same steps to do a quadratic or cubic regression).  - http://www.youtube.com/watch?v=LVnHpmbv7Yg

6.1 E.   Evaluate an equation using the calculator, for x= 3, http://www.youtube.com/watch?v=Y3Is8UmXhoc

Lesson 6.2, objective 1. read p307, 308, + videos.

A.       Writing polynomial in factored form - http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-567s.html

B.      Using polynomials to solve problems. http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-568s.html

C.      Find relative Max or Min on ti-83 http://www.youtube.com/watch?v=5XyYb7fdK1A

 

Lesson 6.2, objective 2 . read p308, 309, + videos.

D.       Finding the zeros of a polynomial. http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-569s.html

E.       Writing a polynomial from its Zeros  http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-570s.html

 

Lesson 6.3, obj 1,read  p315. + videos

  1. Dividing polynomials. http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-332s.html

 

Lesson 6.3, obj. 2 ,read  p316-318. + videos

  1. Synthetic division for polynomials - http://www.youtube.com/watch?v=3lVLhZ3ds-8
  2. Dividing polynomials using synthetic division + word problem. http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-571s.html

 

Monday, February 2, 2015

Videos 5.7 to 6.1



5.7 A… Completing the square  http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-296s.html

 

5.7B… Completing the square when "a" is different than 1. http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-297s.html 

 

Videos 5.8

A.      Using quadratic formula.  http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-298s.html 

B.      Using quadratic formula to find complex solutions.  http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-564s.html

 

…

Lesson 5.7, p280, Example 6. , great video on how to change equation from Standard form to Vertex form.

http://www.youtube.com/watch?v=dse3XdN9q2k

 

Lesson 5.8, objective 1,

p285 – 287, ex 1-3.

A.      Using quadratic formula.  http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-298s.html 

B.      Using quadratic formula to find complex solutions.  http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-564s.html

 

Lesson 5.8, objective 2, p287 – 289, ex 4, 5. + videos.

C.    Using the discriminant to find the number of solutions.... http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-301s.html

 

Lesson 6.1, objective 1 and 2 .

A.      Classifying polynomials. http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-263s.html

B.      Modeling data using calculator. http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-565s.html 

C.      Using a model to predict values (application) http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-566s.html 

Monday, January 26, 2015

Caclulator video. Find the zeros of a function using ti83 or ti84

How to find the zeros of a function with a graphing calculator. 

even though this example does not show a quadratic function, the steps are the exact same... 

Saturday, January 24, 2015

videos 5.6 to 5.8

Videos 5.6

A.      Video on the square root of negative numbers.  http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-558s.html

B.      Video on Simplifying imaginary numbers  http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-559s.html

C.      Adding complex numbers. http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-560s.html

D.      Multiplying complex numbers (video) http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-561s.html

E.       Finding complex solutions (video) http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-562s.html

 

check point quiz 2 on p276. Check your answers to quiz on this link >> https://skydrive.live.com/redir?resid=DD862520A086A24F!325&authkey=!AC5NtGOZI8aa-A0

 

5.7 A… Completing the square  http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-296s.html

 

5.7B… Completing the square when "a" is different than 1. http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-297s.html 

 

Videos 5.8

A.      Using quadratic formula.  http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-298s.html 

B.      Using quadratic formula to find complex solutions.  http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-564s.html

Thursday, January 22, 2015

Fwd: The Hour of Code is here

  For all of you that would like to learn Computer Programming this is great! 
By the way, computer programming is a required course to all freshmen in Harvard University. This stuff applies everywhere. Learn it! 

Computer programming changed my life. I first programmed games on my graphing calculator as a hobby in 9th grade. That hobby turned into stimulating internships later in high school. That helped me get into and succeed in college. When I graduated in the late 90s, the ability to code that I had honed since high school became one of the key gateways to a rewarding profession. Even Khan Academy wouldn't exist if I hadn't been able to write the software in 2005 to make it all work!

Fast forward to 2014, and the importance of coding has only accelerated. Regardless of what career a student chooses, the ability to design and understand software will be be invaluable.

Start the Hour of Code

The Hour of Code is an hour-long introduction to computer programming designed to demystify coding and show students that everyone can learn the basics. At Khan Academy, we've crafted several custom-made tutorials for your students that require no prior experience.

Try Hour of Code on Khan Academy!

Hour of Drawing with Code: Students will learn to program using JavaScript, one of the world's most popular programming languages via two great options:

  • Drag-and-drop: experimental block-based coding for younger students with less-developed typing skills and students on tablet devices (ages 8+).
  • Typing: keyboard-based coding for older students (ages 10+).

Hour of Webpages: Students will learn to make their own webpages using the basics of HTML and CSS (ages 10+).

Hour of Databases: Students will learn the fundamentals of databases using SQL to create tables, insert data into them, and do basic querying (ages 12+).

Last year, 15 million students tried computer programming for at least one hour during Computer Science Education Week on Khan Academy and other platforms.

This year, our goal is to reach 100 million students.

I can't wait to see what everyone makes!

Sal
Founder of Khan Academy and lover of code

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P.S. Even you can code. Spend a few minutes checking out the lessons here.