Tuesday, 16 August 2011
Computer Science at High School
To give you some idea, here is what is now available for our students in New Zealand
Based upon the Curriculum Guide http://seniorsecondary.tki.org.nz/Technology/Specialist-technology-areas/Programming-and-computer-science-PROG
around the Basic Concepts in Computer Science http://seniorsecondary.tki.org.nz/Technology/Achievement-and-learning-objectives/PRCS-6-1
Demonstrate understanding of basic concepts from computer science
Demonstrate understanding of basic concepts from computer science involves: (Achieved)
• describing the key characteristics and roles of algorithms, programs and informal instructions
• describing an algorithm for a task, showing understanding of the kinds of steps that can be in an algorithm, and determining the cost of an algorithm for a problem of a particular size
• describing the role and characteristics of programming languages, including the different roles and characteristics of high level languages and low level (or machine) languages, and the function of a compiler
• describing the role of a user interface and factors that contribute to its usability.
Demonstrate in-depth understanding of basic concepts from computer science involves: (Merit)
• explaining how algorithms are distinct from related concepts such as programs and informal instructions
• showing understanding of the way steps in an algorithm for a task can be combined in sequential, conditional, and iterative structures and determining the cost of an iterative algorithm for a problem of size n
• explaining how the characteristics of programming languages, including the different characteristics of high level and low level (or machine) languages, are important for their roles
• explaining the need for programs to translate between high and low level languages
• explaining how different factors of a user interface contribute to its usability.
Demonstrate comprehensive understanding of basic computer science concepts from computer science involves: (Excellence)
• comparing and contrasting the concepts of algorithms, programs, and informal instructions
• determining and comparing the costs of two different iterative algorithms for the same problem of size n
• comparing and contrasting high level and low level (or machine) languages, and explaining different ways in which programs in a high level programming language are translated into a machine language
• discussing how different factors of a user interface contribute to its usability by comparing and contrasting related interfaces.
The basic concepts from computer science are: the concept of an algorithm; the concept of a programming language; and the concept of a user interface and its usability.
An algorithm is a precise unambiguous specification of how to accomplish some computational task in a finite number of well-defined steps. An algorithm is distinct from a computer program. An algorithm has a cost (the number of steps it will perform) for a task. Different algorithms for the same task may have different costs.