MIT App Inventor - Chapter 4

The value of a Boolean expression is either __________.

• True or false

• Number or text

• Yes or no

• 0 or 1

The symbols >, <, and = are all __________ operators.

• relational

• logical

• conditional

• ternary

The if then block can be found in the ________ drawer of the Blocks column.

• Variables

• Text

• Control

• Math

A(n) __________ block tests a Boolean expression and then executes one set of

blocks if the expression is true, or another set of blocks if the expression is false.

• select

• if

• if then else

• ifcall

An if then block is a mutator block, which means that we can add more

_______.

• else sockets

• else if sockets

• both else and else if sockets

• if sockets

and, or, and not are ​​​______ operators.​

A compound Boolean expression created with the ​ ____ operator is true

only if all of its connected expressions are true.

A compound Boolean expression created with the ​ ____ operator is true if

any of its connected expressions are true.

This property holds the list of items that is displayed by a ListPicker.

• List

• Items

• Text

• Elementsfromstring

This CheckBox property determines the text that is displayed next to the component’s box.

• Caption

• Selection

• Text

• Description