Author: admin

Powerful knowledge is defined by Young as subject-specific, coherent, conceptual disciplinary knowledge that, when learned, will empower students to make decisions and become action-competent in a way that will influence their lives in a positive way.

The notion of Powerful Knowledge is very fashionable these days. Originally developed as a theory by sociologists of education Michael Young and Johan Muller, it has crossed over into the mainstream of teacher discourse. Having escaped the academy, Powerful Knowledge is now being discussed at teacher conferences, classed as an essential part of the curriculum., and even defining the ethos of certain schools.

Knowledge and Control

Michael Young is well known in the education world as the editor of Knowledge and Control, a series of sociological critiques of traditional theories of knowledge and education. Simply put, his argument in the 1970s was that typical views of education — whether imparting worthwhile knowledge to students or initiating them into the disciplines — ignored the role of schools in reproducing social inequalities in society.

Knowledge could be seen as a tool with which the powerful exerted control over the not-powerful. To get into our club, this is the currency you need. The system inevitably excluded many students who arrived at school without the ‘cultural capital’ described by Pierre Bourgeoisie, hence its reinforcement of existing inequalities.

What have we discussed?

1.the numbers 1,2,3,…….. which we use for counting are known as natural numbers.

2. if you add one (1) to a natural number , we get its successor. if you subtract (1) from a natural number , we get its predecessor.

Definition

ALGEBRA treats of quantities as in Arithmetic, but with greater generality; for while the quantities used in arithmetical processes are denoted by figures which have one single definite value, algebraical quantities are denoted by symbols which may have any value we choose to assign to them.

The symbols employed are letters, usually those of our own alphabet. We begin with the definitions of Algebra, premising that the usual symbols of operation (additions, subtractions, multiplications and divisions) will have the same. Meaning as in arithmetic

Algebraic-al expressions

An algebraic al expression is a collection of symbols; it may consist of one or more terms, which are separated from each other by the signs. ( +)  And (-).

For example

 Thus 7a + 56 – 3c – x + 2y is an expression consists in five terms

For example: 5a +30 – 26

Types of Arithmetical Expressions

Arithmetical Expressions are either simple or compound

 1. A simple expression consists of one term,

  For example:  5a.

2. A compound Expression consists of two or more terms.

For example: 7a + 56 – 3c – x + 2y.

Types of Compound expressions

Compound expressions may be further distinguished

1. Binomial expression;

 Thus an expression of two terms, as, is called a binomial expression.

  For example: 3a – 2b

2. Trinomial expression;

Thus an expression one of three terms, is called a trinomial expression.

  For example: 2a – 3b + c

3. Multinomial expression;

Thus an expression one of more than three terms is called a multinomial expression

7a+5b-3c-d+2f.