CS 1025 01 - Week #4 (Jan 30 - Feb 03)

Monday, January 30th

1. Scratch.MIT.EDU - SCRATCH.MIT.EDU web site.
   See and review WEEK #3 Monday 01/23 section for lots of examples and links to resources.

2. About Scratch overview and video demo. Fun video is 1 minute 37 seconds long. Watch it!

3. Scratch Resources and links and examples.

4. The Data Flyer tool from SHODOR. What is the SLOPE? What is the INTERCEPT?
   y = mx + b is the equation for a line.

   Find the equation of the line that goes through:
   
       (2, 4)   and    (6, 9)   using the Data Flyer tool.
                                          ----------
       What is m?          m is the slope
       What is b?          b is the intercept
   

5. Finding the SLOPE of the line that goes through two points.

   The slope is m in the equation y = mx + b.
   y = 3x + 10, the slope is 3 and the intercept is 10.
   
   y = 3x + 10 is a LINEAR EQUATION, it describes a line, 
                                     and a relationship between x and y.
   

Wednesday, February 1st

1. NetLOGO Physics and Music Assignment is due today anytime.
   See WEEK #3 page for readings and links.

2. Playing the music at different TEMPOs using a SLIDER named quarterNoteLength.

3. Twelve Turtles: Trigonometry and Turtle Graphics - what is $

   Where is WALDO? (What is the xcor and the ycor of the given turtle). SOH, CAH, TOA...

4. The SOH, CAH, and TOA relationships and right triangles.

   The Pythagorean Theorem equation that the Scarecrow in the Wizard of Oz got so excited about!
   3 squared plus 4 squared = 25 and the square root of 25 is 5, so the hypotenuse has length 5.
   3, 4, 5 side length sides is classic example for right triangles.

5. Scratch.MIT.EDU: Right triangle review with Legs , Hypotenuse, and Where is Scratchy (Waldo) problem.
   Two acute angles and too cute of a tutorial for words, but not for cowbell.

   Hypotenuse first, Adjacent Leg second, Opposite Leg third.

Friday, February 3rd

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