Programming Concepts-Variables March 6, 2008
Posted by wagongrrl in General, Scratch.Tags: programming, Scratch, variables
1 comment so far
Variables are used in Scratch to store numeric information. You have learned about variables in Math, how they store or represent numbers that are unknown. A simple way to explain this is that variables store numbers that change over time. Think about a score in a game, or is your character has lives or strengths; these are numbers that change depending upon what else is happening in the program. Just like when you solve or balance an equation, if you change x, then y must change.
The example I showed in class was a simple race track with cars moving around and a variable that counted the number of times the car crossed the finish line (the number of laps).
Here are some race examples that students have created to demonstrate the concept.
More Programming Concepts- Conditional Statements February 11, 2008
Posted by wagongrrl in General.Tags: conditional statement, programming, Scratch
1 comment so far
Conditional statements ask a question, then, depending upon the answer, execute a sequence of statements.
IF (specific condition is met) THEN (do this action)
Try out some of these ideas for your Scratch if a condition is met: change sprite size, change sprite visibility, change sprite location, change sprite color, change sprite effect.
