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.
- Choose a letter, for example the first letter of your name.
- Draw it as a bubble letter on squared paper using straight horizontal and vertical lines that always join dots.
- 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
Extra extension!
At the end of your letter algorithm, do pu and program the turtle to move to the starting position for the next letter.
Extra extra extension!!
Create a procedure called eg T (or whatever your letter is) so that all you have to type is T to make it draw a T.