What is an Algorithm?

• A chart showing the flow of a series of events

• Step-by-step instructions used to solve a problem

• A decision arrived at by following instructions

• A computer program that follows a chart

An algorithm ...

• ... illustrates some steps, in no particular order, and following no logical reasoning

• ... illustrates some random shapes in a flowchart but in a set order

• ... illustrates a series steps in a particular order, following logical reasoning

• ... illustrates series of decisions needed to bake a cake

An Algorithm has 4 main characteristics. It should be....

• Doable, Understandable, finite and precise

• Doable, Creative, finite and precise

• Doable, Understandable, Infinite and precise

• Amazing, Understandable, finite and precise

Start

Put your hand on the doorknob

Turn the doorknob to the side until it unlocks the door

Push or pull the door to open it

End

..................................................

What would be an appropriate title for this algorithm?

• How to push a door

• Steps to touch a doorknob

• Steps to stand in front of a door

• How to open a door

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

Which of these is NOT an example of an algorithm?

• a Poem

• Written note for how to make a cup of tea

• Car manual

• Recipe

When you write an algorithm the order of the instructions is very important.

• True

• False

Which of the following are types of Algorithms?

• Recipes

• Class Schedules

• Map Directions

• All of These

sum = number 1 + number 2

is what type of statement?

• Input

• Processing

• Output