MrW's Computing Blog

1. j2launch – 
2. Click on Level 3 
3. Type these two instructions:

reset
setpensize 5

4. Can you draw a letter?
5. Use these commands:
   • fd 30 (or other numbers)
   • bk 30  (or other numbers)
   • lt 90
   • rt 90
   • (Diagonal letters will need rt 45 or lt 45)
6. Press play  each time to see if it works – don’t carry on until you are happy with each instruction.

7. If you finish one letter, type
   1. pu (pen up)
   2. move to a new place using fd, lt, rt…
   3. pd (pen down)
8. Try another letter

Challenges

• Change the pensize to 30
  • Could you make different letters different pensizes?
• For a letter that contains a square, use this square code
  • repeat 4 [fd 80 rt 90]
• Change the colour of each letter by putting this code before the letter code:
  • colour “blue

Think of all the things you can draw in LOGO:

• Lines = fd 50 or bk 50
• Turns = rt 90 or lt 90 (or other angles)
• Circles = circle 50
• Squares = repeat 4 [fd 50 rt 90]
• Shapes =  repeat ? [fd 50 rt 360/?] (/ means divide; ? means number of sides)
• Stars = repeat ? [fd 50 rt 360 /? -180] same as shapes but change the angles; ? bigger than 8
• Spirals = see last post for Y5
• Colours = colour “blue
• Moving without drawing = pu setxy 100 100 pd
• Shading = fill (fills the area you are in with the current colour)
• Pen thickness = setpensize 5
• Procedures = to newthing …instructions… end
• Procedures with variables = to newthing :size :col …. end
• Call procedure with variables = newthing 50 “blue
• Make/change  variables = make  “length 50
• Use variables = fd :length
• Increase variables = make “length :length + 1

Your task

• Design and draw a picture with different elements (could doa uick sketch in j2e5).
• Use as many skills from the list above as you can
• You can copy and paste code from your previous projects
• Lavel your code with comment lines starting with semi colon ; ,eg
  • ;———-Wheel———–

Ideas

• A car or vehicle
• A robot
• A house or building