CS50 2021 in HDR - Lecture 0 - Scratch

TABLE OF CONTENTS

00:00:00 - Intro
00:01:17 - Problem Solving
00:05:36 - Representation
00:06:14 - Binary
00:13:25 - Letters
00:16:40 - ASCII
00:20:12 - Unicode
00:25:38 - Color
00:28:00 - Images
00:29:28 - Videos
00:30:43 - Music
00:31:50 - Questions on representation
00:35:41 - Algorithms
00:40:33 - Time to solve
00:43:57 - Pseudocode
00:50:35 - Scratch
00:52:39 - Scratch blocks
00:57:22 - Hello world
01:03:30 - Inputs to outputs, outputs to inputs
01:05:50 - Text to speech
01:07:41 - Meow
01:08:35 - Loops
01:10:42 - Custom blocks
01:15:50 - Conditionals
01:17:25 - Forever
01:18:42 - Video sensing
01:20:25 - Whack-a-mole
01:21:57 - One piece at a time
01:22:48 - Oscartime
01:24:24 - Oscartime stage
01:25:30 - Oscartime trash can
01:27:18 - Oscartime falling trash
01:29:42 - Oscartime dragging trash
01:31:30 - Putting Oscartime together
01:33:42 - Movement
01:35:32 - Movement's abstractions
01:37:30 - Bouncing
01:39:05 - Following
01:41:00 - Ivy's Hardest Game

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David J. Malan
https://cs.harvard.edu/malan
[email protected]