Helping you to assess what you have learnt the previous lesson

A selection statement evaluates an expression as what?

Which part of the following block of code would  be considered the expression?

The lines of code following the "else" will only be executed if the expression has evaluated to false

What will be the output of this program when it is executed? (What will the sprite say?)

Selection –

Helping you to assess what you have learnt this lesson

The greater than symbol in the image below is an example of a comparison operator or a logic operator?

Does the following statement evaluate as True or False?  -  (30 < 50) or (30 > 50)

Does the following statement as True or False? - (20 = 20) and (15 < 15)

Does the following statement as True or False? - not (20 = 20)

Which of the conditions would evaluate to ‘true’ with the following inputs? [2 answers]

Operators

In this lesson, we will introduce logical and comparison operators. We will get practise in this by being given different expressions to decode to see if they evaluate to 'true' or 'false' before being tasked with modifying a 'Big Quiz' Scratch program.


Lesson overview:Operators

Programming essentials in Scratch: part I: