Programming a screen turtle

Computing

Create an algorithm for a text-based program

Patterns and repeats

Count-controlled loops

Procedures in programming

Creating a program that uses loops

In this unit pupils will create text-based programs which use repetition. They will plan, modify, and test commands to create shapes and patterns. They will explore the different types of loops that can be used to repeat commands in a program.

Repetition in programs

What does the turtle do when it follows commands?

What is the result of changing a value in a command?

The program will guess the correct command.

What happens if you type `f 100` instead of `fd 100` in Logo?

Which command will make the turtle turn left?

What command clears the screen and resets the turtle?

What command lifts the pen so the turtle can move without drawing?

a set of ordered commands that a computer can run

to help the computer understand the instructions

Why is it important to be accurate when entering commands?

What happens when you lift a pen from the page and move your hand (in real life)?

to ensure the person reaches the correct destination

to confuse the person following the directions

Why is it important to be accurate when giving directions?

Which command will make a child travel the furthest from the starting point?

Programming a screen turtle

Lesson outcome