Lesson 2

The lesson plan

1. Lead-in (5 min)

2. Lexical exercises (20 min)

3. Speaking practice (60 min)

4. Homework (3 min)

LEAD-IN

The 20^th century can be considered the Computer Age. The remarkable thing about the Computer Age is that so much has happened in such a short time.

Ask students to tell about the history of computer science: main periods?

The periods of computer science development:

circa 2400 BCE; before the 1920s; after the 1920s; after the late 1940s; in 1948

LEXICAL EXERCISES

I. Ask students to give definitions to words and word combinations which they have learnt at the previous lesson and to spell them:

circa – (used with a date) at the approximate time of

computer science – the study of computers and their application

gradually – slowly, over a long period of time

logical – performed by, used in, or relating to the logic circuits in a computer

to run – to launch, to perform a program

BCE – abbreviation for Before Common Era

computation – a calculation involving numbers or quantities

analog – using a continuously changing range of physical quantities to measure or store data

Turing machine – a hypothetical universal computing machine able to modify its original instructions by reading, erasing, or writing a new symbol on a moving tape of fixed length that acts as its program

to refer to – to be relevant (to)

purely – only, completely

digital – using a system of receiving and sending information as a series of the numbers one and zero, showing that an electronic signal is there or is not there

Turing test – a proposed test of a computer’s ability to think, requiring that the covert substitution of the computer for one of the participants in a keyboard and screen dialogue should be undetectable by the remaining human participant

abacus (pl abaci) – a counting device that consists of a frame holding rods on which a specific number of beads are free to move. Each rod designates a given denomination, such as units, tens, hundreds, etc., in the decimal system, and each bead represents a digit or a specific number of digits

to store – to enter or retain (information) in a storage device

to evolve – to develop or cause to develop gradually

value – a particular magnitude, number, or amount

to employ – to give somebody a job to do for payment

to invent – to create or devise (new ideas, machines, etc.)

onset – a start; beginning

to perform – to do, to carry out something

II. Learning new vocabulary for the theme “COMPUTER”. Ask students to match computer terms written in bold with definitions given below. Then ask them to read matched pairs aloud and put between the term and its definition the verb “is”. For example,

Computer science is the study of computers and their application.

Дата добавления: 2015-07-20