Measurable Outcomes and Assessment Methods

Question 1

what is an expression?

Answer 1

an input that “evaluates” to a result e.g: 1+1

Question 2

what are the three mechanism that a program language uses to create complex programs

Answer 2

• primitive expressions, which represent the simplest entities the
language is concerned with,
• means of combination, by which compound elements are built
from simpler ones, and
• means of abstraction, by which compound elements can be named
and manipulated as units.

Question 3

What are the two broad elements used in programming

Answer 3

procedures and data

• Data is “stuff”
• Procedures are “instructions” on how to manipulate that data

(more details example can be found on page 6 of the Interpretations of Structural programing

Question 4

What are the kinds of expressions

Answer 4

• Numbers
• Symbols
• Lambda expressions
• Definitions
• Conditionals
• Combinations

Question 5

Substitutions rule

Answer 5

To evaluate an application

evaluate the operator to get procedure.