Microbit Lesson 3

What is selection?

• Repeating a number of steps

• Repeating a number of steps until the condition is true

• A decision point in your program

• The order in which instructions are carried out

In programming how is selection implemented?

• IF - OTHERWISE

• IF - ELSE IF - ELSE

• DO - ELSE

• IF - ELSE - DO

What does iteration mean?

• Code is repeated until the user presses enter

• Code which has errors within it

• When a set of instructions in a code are repeated a certain number of times or until a condition is met

• It is a decision point in a computer program

Which function would you use on the Block editor to implement selection statement?

• Variables

• Maths

• Input

• Logic

The "On Shake" Microbit command relies on the

• compass
• LEDs
• accelerometer
• the buttons

In which section can you set certain lights to light up on your micro:bit?

• Functions
• Arrays
• Text
• Basic

In programming, what is iteration?

• The repetition of steps within a program
• The order in which instructions are carried out
• A decision point in a program
• Testing a program to make sure it works

Why is iteration important?

• It determines the order in which instructions are carried out
• It allows code to be simplified by removing duplicated steps
• It allows multiple paths through a program
• It ensures the code works correctly

**Looking carefully**

How many repeat blocks are in this code

• 0

• 2

• 3

• 7

Answer explanation

There are two repeat blocks and one forever block. Forever counts as repetition

How confident do you feel about iteration (repeating or loops)

• Very confident

• Somewhat confident

• Not very confident

• No idea