LQ: How do I write algorithms to solve problems?

Let’s start with a challenge!  Have a go at Blockly Maze  How far can you get?

Next we will look at LOGO using Textease Turtle.

1. Choose a letter, for example the first letter of your name.
2. Draw it as a bubble letter on squared paper using straight horizontal and vertical lines that always join dots.
3. Have a go at writing an algorithm (set of instructions) to make your turtle draw the letter.

Steps to success…

• LOGO instructions: fd 20   bk 20  lt 90   rt 90
• Remember lt means “turn left” not “go left”
• Plan your instruction on your paper
• Need a space between letters and numbers
• Select instructions (double click – red squares) then turtle/play button
• Try out often to test, then debug

Extension – draw a letter with a hole, eg A, R, O, D, B, etc

• Use pu (pen up) and pd (pen down) if you need to get somewhere without drawing a line