learning-picostack

Logo and turtle graphics

What is it?

Logo is a programming language created in the 1960’s.

See more information in Wikipedia here.

Things to notice

In the first program, the author is the programmer, and asks the student to carry out the program. Or, in other words, to follow the instructions.

Each instruction is a one line program for the turtle to follow.

Whereas in the first program, the author asked to student to repeat something four times, in the second program, the student tells the turtle to repeat something four times.

The third program is different, in part because nothing happens on the screen. The student (as directed by the author) writes a program and saves it away.

Exercises

1. In the first program, the author wrote the program, the student carries it out, operating the turtle which immediately obeys each instruction. In the second program, the author prompts the student to write a one line program and immediately have the turtle carry it out.
2. In the third program, the author instructs the student to write a program and save it away for future use.
3. In the fourth program, the student instructs the turtle to use the third program.
4. There are no wrong answers, just teaching opportunities.

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