Lesson 0.1: The Workspace and Run Controls

A block program is built in a workspace. The workspace is the large editing area where you connect instructions. The toolbox holds the blocks that this lesson allows you to use. A block can accept another block only when their shapes and value types fit.

The practice panel has four main controls:

• Run starts at the first block and continues until the program ends or reaches its safety limit.
• Step shows one completed instruction at a time. Use it when you need to see where a value changed.
• Reset restores the starter program. It asks before replacing your work.
• Stop is handled by the operation limit. If a program repeats too long, the runner stops and reports the problem.

The highlighted block is the instruction most recently shown by Step or Run. The output panel reports printed values. It also shows variables and the scene position when your program changes them.

Guided practice

Connect a print block under the start block. Put a text value into print, then enter ready. Run the program and find ready in the output. Change the text, use Reset, and confirm that the starter blocks return.

Try moving a block away from the program. A loose block does not run because it is not connected to the starting stack. Connect it again and compare the output.

Loading the block workspace...

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