1.2

Question 1

Abstraction

Answer 1

Procedural abstraction gives a name to a procedure. People can then use the procedure without worrying about the finer grain details.

Question 2

Backlog

Answer 2

A prioritized list of features or user stories to add to a program.

Question 3

Call

Answer 3

When a procedure or function is called, the program executes the procedure or function next.

Question 4

Developer

Answer 4

Person who writes computer code to create technology tools.

Question 5

Function

Answer 5

A sequence of instructions that returns a value and can be called from other parts of a program.

Question 6

Groom the backlog

Answer 6

Prioritize a list of items that are on a task list so that the items intended to be accomplished next are in the top slots on the list.

Question 7

Internet

Answer 7

The network of computer networks which communicate through common protocols for accessing information contained inside the computers. The Internet contains the World Wide Web.

Question 8

Local variable

Answer 8

A variable that can only be accessed from a specific portion of a program.

Question 9

Modular

Answer 9

Pieces that are well defined with no dependencies on other pieces.

Question 10

Parameter

Answer 10

The local variables created when a function or procedure is called. Parameters are initialized to the values of the arguments provided when the procedure or function was called.

Question 11

Problem a Decomposition

Answer 11

Breaking a problem apart into smaller pieces.

Question 12

Pass

Answer 12

We describe arguments as being “passed” to a procedure; the arguments’ values are assigned to the procedure’s parameters.

Question 13

Procedure

Answer 13

A sequence of instructions. The entire sequence is given a name to refer to the procedure from other parts of the program. Similar to a function in programming, but doesn’t have to return a value.

Question 14

Return Value

Answer 14

Any value that a method or function gives back to the statement command from which the function or method is called.

Question 15

Reverse Engineering

Answer 15

Taking a finished product and figuring out how it works.

Question 16

Scope

Answer 16

The portion of a program that knows about a variable. In App Inventor, variables are either global (known by the blocks in a screen) or local (known by the blocks in a procedure or for loop.

Question 17

Sprint task list

Answer 17

A list of small steps to accomplish, breaking down a user story from the backlog.

Question 18

Sub domain

Answer 18

A domain name under the control of a higher-level domain name. For example, pltw.org is a subdomain of .org.

Question 19

Test user

Answer 19

Person who participates in a usability study.

Question 20

URL

Answer 20

Abbreviation for Uniform Resource Locator. URL is one type of Uniform Resource Identifier (URI); the generic term for all types of names and addresses that refer to objects on the web. A URL that uses the HTTP / HTTPS protocol is usually referred to as a web address.

Question 21

Usability study

Answer 21

Observation of users interacting with a program to determine the program’s strengths and weaknesses for the purposes of improving the ease of use and usefulness of the program.

Question 22

Value

Answer 22

A value is a particular piece of data such as a number or a string.

Question 23

Web

Answer 23

The World Wide Web, or just “the web,” is a subset of the Internet. The web consists of pages that can be accessed using a web browser.