Understanding algorithms

What is an Algorithm?

• A flowchart
• Step by step instruction used to solve a problem
• A decision
• A Pseudocode

What is a sequence

• Putting and executing instructions in order.

• A pattern of numbers.

• Instructions which a computer follows.

• A line of code

Which is the easiest set of instructions to follow?

• Draw a house.

• Draw a house with 4 windows, a door, chimney and a path.

• Draw a house with windows and a drive.

• Draw a square, with 4 squares inside.

If an algorithm is complicated it is easy to follow?

• TRUE

• FALSE

In a flow chart what is this symbol used for?

• Start/End

• Process

What is the name of this symbol in a flowchart?

• Input

• Start/End

• Decision/Question

Why is this not a sequence?

Start car

Put in key

Turn key

Drive away

• There are spelling mistakes

• The instructions are in the correct order

• The instructions are in the wrong order

• It is a sequence

Which algorithm, will NOT take you from A to B

• UP 1

  RIGHT 5

  UP 2

• RIGHT 1

  UP 3

  RIGHT 4

• UP 2

  RIGHT 5

  UP 1

• LEFT 1

  UP 3

  RIGHT 5