Page 93 - Computing book 6

Minecraft Class 6

If you ever want to delete a block, just drag it from the stack back to the toolbox.
To undo your changes and get back to how the level started, use the Start Over button in the top
right corner of the workspace. One more thing: you see the little triangle on the turn blocks?
Anytime you see these triangles, it means that you can pick a different option. Let's start coding!

Repeat Loops:
When building Minecraft, we use repeat loops to place all the initial materials for creating a new
world. That's thousands and thousands of blocks. We also use loops in little ways, for example, to
make Alex's feet move back and forth as she walks. Repeat loops are a powerful part of
programming.

Night is coming so in the next couple of levels, we're going to build a house to stay safe. We're going
to use the repeat block to do this very easily. To build a wall of our house, we can either tell Alex to
moveForward(); and
place planks four times
or we can tell her to
moveForward(); and
place one plank, then
take this command and
use the repeat block to
have her perform the
action multiple times.
Now we'll click on the
repeat block and tell
her how many times we
want her to perform
this action.

The City School /Academics/Computing Curriculum/Class 6/2020-2021 Page 92 of 94