Post on 23-Jan-2016
description
transcript
As you come in…
Sign in (in back) and pick up Badge Name Card – write your first name LARGELY on
back Any questions? (of any kind)
Put on index cards, drop in box (up front) Log in:
Launch/Start Alice Open a web browser, log in at http://piazza.com
Check your email for invitation
Question!
How do you remember all of this?!?!? I am used to taking notes…
VERY GOOD QUESTION! It’s because of the computer…
The ability to interact with it to “find out what’s true”
How do you remember what to say about specific topics (questions, slides, etc.) We’ve got copious notes for you
On each slide We have videos
Demoing as we would do in class Watch them yourself, or have students
watch them
Agenda (modify?)
Dates for Summer PD UCSD Class Month of July (observe once,
optional attend) Basics of Programming: Flow of Control
How programs are different than essays Sequential, Parallel, Repeated, Conditional
Nested Loops One loop inside another
Nested Ifs One if inside another (in “true” or “false” part)
Vocabulary Review
Object Instruction / Tile Method Parameter Loop (aka Counted Loop) -- repetition If statement -- conditional
Nested Loop: Eat At Joe’s (lecture example)
Let’s look at it Show how to make something invisible Build the code together
Eat At Joes, Nested Loop
Opacity 1 is visible Opacity 0 is invisible
Nested Loops: Bunny Square Dance We want to direct the bunny to hop in a
square pattern. The “length” of each side of his square should be 5 hops. Let’s watch
Break down the problem: Create “one side” of square Create turn Repeat that whole thing…
Nested Loops: Bunny Square Dance We want to direct the bunny to hop in a
square pattern. The “length” of each side of his square should be 5 hops. Let’s watch
Here’s the structure of our code, what numbers would you put in for each missing number?
Outer Loop count Inner Loop count
Turn parameter
A 4 5 .25
B 4 5 1
C 5 4 .25
D 5 4 1Goal: Hop in a square, 5 hops on each side
Review: Ifs – Conditional Execution
With one if statement, we could do Either “then block” or the “else block” but
not both
Else block
Then block
More Complex Conditional Execution(e.g. more than one “test”)
b
More Complex Conditional Execution(e.g. more than one “test”)
b
More Complex Conditional Execution(e.g. more than one “test”)
b
Let’s make a game!
Player can click on a ball The bunny will say something different
depending on the ball chosen. We’ll build up our solution a bit at a time
Get red and blue working (with one if statement)
Get green working(nested if statement)
Online Textbook Example Section 9.2
BUT WAIT!
EVENTS!
Simple way to take user control Many ways, we’ll stick to “click on object”
NEW CONCEPT: Parameter A value you can send to a method that controls
how it works Wait! We know this!
We’ll create our own parameter to the my first method If this is confusing, don’t worry, we’ll explore more…
What does this code do?
Assume that you have an event so that when you click on an igloo it calls a my first method and sends the igloo as a parameter
Next we’ll show youmy first method and askyou what it does
What does this code do?When blue, red or green…
FeedbackParaphrase
Justify
World.my first method
How many of the following are true?
1. When the igloo is blue, says Ice Cold! 2. When the igloo is red, says Hot! 3. When the igloo is blue, says Ice Cold!
AND then says Try again!4. When the igloo is green, nothing
happens
FeedbackParaphrase
Justify
1. blue, says Ice Cold! 2. red, says Hot! 3. blue, says Ice Cold! AND then says Try
again!4. green, nothing happens
A) 1 B) 2 C)3 D) 4E)