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# Control lesson 3

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### Control lesson 3

1. 1. Control Repeats
2. 2. Starter You have 5 minutes Peer Mark homework
3. 3. Starter Process Start / Stop Decision Input / Output LT PU CS FD RT BK Left Pen Up Clear Screen Forward Right Back
4. 4. Lesson Objectives <ul><li>Understand how to make instructions repeat themselves </li></ul><ul><li>Identify different angles for turning </li></ul><ul><li>Be able to use Logo to program loops </li></ul>
5. 5. Learning Outcomes <ul><li>Starter – Mark homework </li></ul><ul><li>Task 1 – Draw a square with repeat command </li></ul><ul><li>Task 2 – Draw regular shapes </li></ul><ul><li>Task 3 – Draw a pattern using repeats within repeats </li></ul>
6. 6. <ul><li>Computers can be made to do clever things by giving them the correct instructions </li></ul><ul><li>Computers can repeat things without making mistakes </li></ul>Repetition Repeating actions in logo saves you work and time
7. 7. Repetition START FD 100 RT 90 Is it a square? STOP No Yes Using repeats makes loop in a system
8. 8. <ul><li>You use the word Repeat as well as the number of time </li></ul><ul><li>Actions need to be inside brackets </li></ul><ul><li>E.g. To draw a square... </li></ul><ul><li>Repeat 4 [FD 100 RT 90] </li></ul>How?
9. 9. <ul><li>Load LOGO and use repeat instructions </li></ul>Task 1 You have 10 minutes <ul><li>Make a Square </li></ul><ul><li>Make a Triangle </li></ul><ul><li>Make a Pentagon </li></ul>
10. 10. <ul><li>Computers can be programmed to work out angles for us such as..... </li></ul>Regular Shapes To draw a Square 360/4 Repeat 4 [FD 100 RT 360/4]
11. 11. <ul><li>Repeat Commands without angles </li></ul>Task 2 <ul><li>Make a Square </li></ul><ul><li>Make a Triangle </li></ul><ul><li>Make a Pentagon (5 Sides) </li></ul>You have 10 minutes
12. 12. <ul><li>You can enclose a repeat inside another repeat command </li></ul>Repeats within Repeats Repeat 2 [Repeat 100 [FD 50 BK 50 RT 360/100] RT 90 PU FD 200 LT 90 PD]
13. 13. <ul><li>Impressive patterns can be programmed using repeating instructions </li></ul>Task 3 <ul><li>Create your own pattern with one line of instructions </li></ul>You have 15 minutes
14. 14. <ul><li>Repeating actions in logo can save time. </li></ul><ul><li>Computers can be programmed to work out angles and create regular shapes </li></ul><ul><li>Impressive patterns can be programmed using repeating instructions </li></ul><ul><li>Loops can be created to enable software to keep checking and rechecking. </li></ul>What can I remember? Plenary
15. 15. <ul><li>Repeat 2 [Repeat 100 [FD 50 BK 50 RT 360/100] RT 90 PU FD 200 LT 90 PD] </li></ul>To draw a Square 360/4 Repeat 4 [FD 100 RT 360/4] LT PU CS FD RT BK Left Pen Up Clear Screen Forward Right Back PE Pen Erase PPT Draw Again