1.4 Dress Up

Standards

• • CSTA 2-AP-13: Decompose problems and subproblems into parts to facilitate the design, implementation, and review of programs.

CSTA 

Show students the three finished Scratch projects:    Harper, Dani, Black Knight.  

Let students know they can pick which project to work on.

Ask students what two events are triggering action?  

• • •  EVENT: when a sprite is clicked,   ACTION: sprite moves.

    •  EVENT: when green flag clicked,   ACTION: sprite resets to initial position

The goal of today's lesson is to realize that games and animations require a RESET - Initialization, before starting. In scratch, the green flag button, is commonly associated with RESET or START.   In this game, when Green Flag  clicked,  resets sprites to their initial positions.

• • • • Explain that each sprite can be represented by it's position on screen.  Use the move command to show different X,Y positions.

      • Ask students what the difference is between the move and glide commands? ( Move takes you straight there, Glide animates you there).

      • Ask the students why do you think they may want to use the front command? ( So that the sprite in-front can be seen.)

      • Show students how to move code between sprites.  Video (14 seconds)

Go to  student page or student handout to begin working on the project. 

Discuss the following questions:

• • What happens when you press the green button in your program? 

  • What is the difference between the Move and Glide commands?

  • Where is location (0,0)  on the stage? ( x coordinate equals zero, y coordinate equals zero)

• Turn to the back of the student handout. Answer the questions as a class.

Standards CSTA 

• • CSTA 2-AP-13: Decompose problems and subproblems into parts to facilitate the design, implementation, and review of programs.