OBJECTIVE

• Create flow charts and pseudo-code.  
• Explain the difference between code and pseudo-code.
• Use simple logic to program MowerJo.

DISCUSSION

Programming 

• Directions that tell the computer what to do
• Must be very specific - the computer may be fast but it is very dumb
• Must follow rules of syntax (the format for the language)
• Many different languages - each has its own syntax

Pseudocode vs. Code 

• Pseudo-code is similar to actual code but does not need to follow syntax rules
• Example for moving MowerJo if path is clear (MowerJo)

Pseudo-Code	Actual Code
if path is clear     move mowerjo	if (pathIsClear()) {        move()      }

EXERCISES

All of the exercises relate to MowerJo at MowerJo.

1.   Write code to program MowerJo to move forward one step each time you click the Execute Code button. MowerJo should move only if the path is clear.  Set the initial parameters as follows: x = 1, y = 1, direction = South, and Number of gnomes = 0.

2.   Write code to program MowerJo to clear an entire row or column when you click the Execute Code button once. MowerJo should not run into the wall.  Set the initial parameters as follows: x = 1, y = 1, direction = any, and Number of gnomes = 0.

3.   Write code to program MowerJo to move South one step and East one step each time you click the Execute Code button.  Set the initial parameters as follows: x = 1, y = 1, direction = anything, and Number of gnomes = 0.

4.   Create a flowchart and write code to program MowerJo to cut the perimeter of the lawn.  You should program it so that MowerJo does one thing (move or turn) each time you click the Execute Code button.  MowerJo should not hit a wall.  Set the initial parameters as follows: x = 1, y = 1, direction = South, and Number of gnomes = 0.

5.   Create a flowchart and write code to program MowerJo to cut the perimeter of the lawn.  You should program it so that MowerJo clears the entire perimeter after you click the Execute Code button once.  Set the initial parameters as follows: x = 1, y = 1, direction = South, and Number of gnomes = 0.

6.   Create a flowchart and write code to program MowerJo to cut the entire lawn.  You should program it so that MowerJo does one thing (turn or move) when you click the Execute Code button.  Set the initial parameters as follows: x = 1, y = 1, direction = South, and Number of gnomes = 0.

LINKS AND HELP