Difference between revisions of "IB Computer Science 1"

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* [[Looping Exercises]]
 
* [[Looping Exercises]]
 
* [[Looping with GASP Exercises]]
 
* [[Looping with GASP Exercises]]
* GASP w/ loops
 
* Use the following template in a file named '''loopGasp.py''':
 
 
<syntaxhighlight lang="Python">
 
from gasp import *
 
begin_graphics()
 
 
int x = 0
 
while x < 1000:
 
    print x
 
    Circle ( (0, 0), x)
 
    x = x + 10
 
 
update_when('key_pressed')
 
end_graphics()
 
</syntaxhighlight>
 
 
* What do you see when you run the code above?
 
* Let's try to create some other graphics with GASP and loops
 
*# Draw a bunch of Circles across the bottom of the screen
 
*# Draw Circles along all the sides of the screen (left, bottom, right, top)
 
*# Draw a diagonal of Circles from the bottom-left to the upper-right
 
*# Draw 100 Circles of random sizes and random locations throughout the screen (HINT: random.randint())
 
*# Draw 10 random Circles, but each time you draw a Circle, connect a Line from it to the previous Circle
 
*
 
  
 
== Wednesday (11/17/10) ==
 
== Wednesday (11/17/10) ==

Revision as of 12:06, 19 November 2010

Friday (11/19/10)

Warmup:

  • Take out scratch paper and work out the Fibonacci sequence
  • Assign variables to the first two numbers
  • ...how do you calculate the third number?
  • What should happen next?

Agenda:

Wednesday (11/17/10)

Warmup:

  • Assume you have the following code:
1 i = 0
2 while i < 10:
3     print "All work and no play makes Jack a dull boy."
4     i = i + 1
  • What is the counter variable?
  • What is the condition of the loop? (i.e. when does it end?)

Agenda:

Monday (11/15/10)

Warmup:

  • Assume you have the following code:
1 a = 0
2 b = 1
3 c = 0
4 a = a + 1
5 c = c + 1
6 b = a * c
7 c = c + 1
  • What are the final values of a, b, and c?

Agenda:

  • Introduction to Iteration (looping)
    • while loops
    • counter variables
  • Looping practice
    • Print out all the numbers from 0-50
    • Print out all the numbers from 75 down to 25
    • Write a loop that prints out the first 100 even numbers
    • Prompt the user for a number and store it in a variable n, then print out the first n odd numbers (starting at 1) using a loop
    • Print out all the numbers that are divisible by 6 from 0 through 100
  • Guessing Game Assignment

Wednesday (11/10/10)

Warmup:

  • Complete the HTTLACS: Ch 5 exercises and demo to Mr. Bui

Agenda:

  • Introduction to GASP
  • Creating useful functions

Monday (11/8/10)

Warmup:

  1. Prompt the user to enter a decimal (float) number and store in variable x
  2. print int(x)
  3. print round(x)
  4. Test out your program using several numbers (e.g. 3.2, 4.5, 5.9)
  5. What do you think the int() and round() functions do?

Agenda:

  • Review return
  • Review doctests
  • Complete the exercises at the end of HTTLACS: Ch 5 (w/ doctests)

Thursday (11/4/10)

Warmup:

  • Define a function named slope(x1, y1, x2, y2) that takes the four listed parameters
  • Calculate the slope and store it in a variable m
  • print m

Agenda:

  • Return and go over 1st Quarter Exam
  • Re-introduction to Functions
    • return keyword
    • doctests
  • HTTLACS: Ch 5
  • Complete the exercises at the end of Chapter 5 (w/ doctests)

Monday (11/1/10)

Warmup:

  • Prompt the user to enter his/her grade (0-100)
  • Using if statements, do the following:
    • if the grade is greater than or equal to 90, then print "You have an A"
    • if the grade is less than 90 and the grade is greater than or equal to 80, then print "You have a B"
    • if the grade is less than 80 and the grade is greater than or equal to 70, then print "You have a C"
    • if the grade is less than 70 and the grade is greater than or equal to 60, then print "You have a D"
    • if the grade is less than 60, then print "You have an E"

Agenda:

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