KS3 Computing - An Introduction to Selection

What is selection?

• A set of steps to follow

• A path through a solution

• A decision

Why is selection important?

• Selection allows us to include more than one path through a solution

• Selection allows us to repeat steps in a solution

• Selection allows us to make our solution more efficient

How many paths can be followed from a decision?

• As many as is needed

• Two

• Three

How could we represent/describe the process of a computer making a decision in a program?

• IF-THEN-ELSE

• IF-OTHERWISE

• WHEN-DO

Which of the instructions IF,THEN and ELSE represents a question?

• IF

• THEN

• ELSE

Which of the instructions IF, THEN and ELSE points to what to do if the answer to the question is FALSE?

• IF

• THEN

• ELSE

Which of the instructions IF, THEN and ELSE points to what to do if the answer to the question is TRUE?

• IF

• THEN

• ELSE

In a flowchart, which of the following symbols represents a decision?

• 
• 
• 

What does the instruction ELIF allow?

• One path through the algorithm

• More than two paths through an algorithm

• Just two paths through an algorithm

Which of the following instructions represent questions?

• ELIF and THEN

• ELSE and THEN

• ELSE and ELIF