Y7 Variables and Algorithms

Which rows in the program are inputs?

• Row 1

• Row 2

• Row 3

• Row 4

• Row 5

Which row in the program is an output?

• Row 1

• Row 2

• Row 3

• Row 4

• Row 6

What does a variable do?

• Says a name variable

• Prints out a name variable

• Stores a value and can be re-used when called

• Collects an output and stores it

• Helps find things in a program

What would be the answer here?

• Number 1

• Number 2

• Number 3

What would number3 variable hold?

• 22

• 24

• 26

• 28

• 30

What would number3 variable hold here?

• 29

• 30

• 32

• 31

• 33

The following program is written as?

START

INPUT number 1

INPUT number 2

IF number 1 > number 2

OUTPUT £5.00

ELSE

OUTPUT £10.00

• The text above is a flow chart

• The text above is pseudocode

• The text above is a Scratch program

What is the purpose of pseudocode?

• To program a computer

• So we can see the different symbols

• To plan/understand a program in English

• I helps us with the variables

What's happening here?

• Program will draw a hexagon

• Program will draw a circle

• Program will draw a rectangle

• Program will draw a square

INPUT age

IF age < 18

OUTPUT you can't come in

ELSE

OUTPUT allow in

• The code above checks to see when your birthday is

• The code above checks to see if you're old enough to enter

• The code above checks to see if your birthday is coming up

• The code above checks to see if you're male or female