Review of MoleMash

• Sprites are touch-sensitive shapes that you can program to move around on a Canvas.
• The Clock component can be used as a time to make events that happen at regular intervals.
• Procedures are defined using to blocks.
• For each procedure you define, App Inventor automatically creates an associated call block and places it in the My Definitions drawer.
• calling random-fraction produces a number between 0 and 1
• text blocks specify literal text, similar to the way that number blocks specify literal numbers
• typeblocking is a way to create blocks quickly, by typing a block's name