Day 4 Lesson Plan: Sending Messages

Objectives

The students will...

• use the broadcast statement to send messages to other sprites.
• use when I receive statements to start scripts.
• use message passing to change between scenes.

Learning by Seeing

Yesterday we used branching and looping to decide between alternate possible actions and to make things move. Today we will learn about the most powerful way to control the sequence of events in a Scratch program: message passing.

Learning by Doing

Then we will create our own Scratch program which demonstrates what we have learned. Create a story that involves at least three characters (sprites) and three scenes (backgrounds). Use message passing to move the action from one scene to another.