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ALGEBRA.EXE
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ALGEBRA, A SKILL-ORIENTED APPROACH
CATALOG
All exercises (except those in [intro]), can be adjusted by the user
for levels of difficulty. Answers are provided in forms suitable to
the classroom situation, i.e., fractions only (where applicable) with
positive, rationalized denominators; no decimals.
[intro] Introduction to algebra. This program provides the
following exercises:
1. Axioms and postulates.
2. The real number system.
3. Order of operations.
4. Algebraic expressions.
5. A test covering all the areas outlined above.
It is recommended this be an "open-book" test;
i.e.student notebooks permitted.
[isn] Signed number arithmetic, integers. This program pro-
vides the following exercises, (75 line-items, each).
1. Addition, subtraction and mixed, addition and sub-
traction.
2. Multiplication, division and mixed, multiplication
and division.
3. Sequenced operations, 15 items each in addition,
subtraction, multiplication and division. The last
15 items are mixed addition and subtraction.
4. Random mix, all operations.
[eqs1] Linear equations, one variable. Exercises are provided
in the five options indicated below:
1. Ax + B = C or C = Ax + B
2. Ax + B = Cx + D
3. A(Bx + C) = Dx + E or Dx + E = A(Bx + C)
4. A(Bx + C) + D = E + F(G + Hx)
5. A two-page test with 24 items, sequenced in the
same order listed above, and graduated in levels
of difficulty.
[xplot] Linear equations in two variables, plotting. These
are simple exercises containing nine items each, com-
prising an introduction to linear equations in two
variables. All equations are in the slope-intercept
form:
y = mx + b
Skill-Oriented Algebra Page 1 IBM Compatibles
Catalog T'Aide Software Alfred D'Attore
[lineqs] Linear equations, two variables. Options are
as listed below:
1. Finding equations given the slopes or y-inter-
cepts and one ordered pair of integers with--
a. Slopes or y-intercepts given directly.
b. Slopes or y-intercepts given indirectly.
2. Finding slopes or full equations given two ordered
pairs of integers.
3. A two page test with all the options listed above.
[simeqs] Simultaneous equations, two variables. All equations
are given in standard form, e.g., Ax + By = C.
*Options are as listed below:
1. Plotting two equations, finding "intersection".
2. Finding intersections (solutions) by substitution.
3. Finding intersections by addition and subtraction.
4. Finding intersections by method of matrices.
5. Sequenced mix of all exercises listed above.
6. A two-page test with all the options listed above.
*One further option is offered that generates equations in two, three
or four variables. Non-independent sets are sometimes generated.
The user must command small "coefficients" to increase this
possibility. The program then checks for linear dependence and
identifies sets with non-independent equations: no "solutions."
Occasionally, these equations are used (at the board) to illustrate
the power of the "matrix" method. Discretion is advised.
[trifact] Quadratic equations, employing all variations except
equations with complex solutions. Options follow:
1. Multiplying binomials and monomials.
2. Factoring trinomials and binomials, (all fact-
torable over the set of integers).
3. Solving ÜfactorableÜ quadratic equations.
4. A two-page test with all the options as listed above.
All exercises are offered with the additional options of
positive or mixed (positive and negative) quadratic
terms, factorable constants, or non-standard equations
(where applicable).
[f.eqs] Fractional equations. Five options offered as listed
below. The last type results in quadratic equations.
Ax + B Dx + E C F
1. -------- = -------- or -------- = --------
C F Ax + B Dx + E
A
2. -------- + D = E
Bx + C
Skill-Oriented Algebra Page 2 IBM Compatibles
Catalog T'Aide Software Alfred D'Attore
A
3. -------- + Dx = E
Bx + C
A C E A C
4. ---- + ---- = ---- or ---- + ---- = E
Bx Dx F Bx Dx
A
5. ---------- + D = Ex + F
Bx + C
6. A two-page test with all the options listed above.
[eqs1.d] Decimal equations. In the options listed below, all
capital letters are ÜdecimalÜ constants.
1. Ax + B = C or C = Ax + B
2. Ax + B = Cx + D
3. A(Bx + C) = Dx + E or Dx + E = A(Bx + C)
4. A two page test with all the options listed above.
It should be recalled that this course is not designed for "at or
above" grade-level students. The remaining exercises can be
extremely difficult (and therefore discouraging). This is
particularly true of the "rationals." They should be used with
discretion.
[rfex] Rational fractions, exponentials. In all exercises
exponents may be chosen positive, negative or both.
1. Multiplication, division or mixed, multiplication
and division.
2. Addition, subtraction or mixed, addition and
subtraction.
3. Line multiply, including "powers to powers."
4. Simplify.
5. Mixed exercises, all types, one page.
6. A two page test with all the options listed above.
[rff] Rational fractions, factorables. Options follow:
1. Addition, subtraction or mixed, addition and
subtraction.
2. Multiplication, division or mixed, multiplication
and division.
3. Simplify.
4. Sequential mix, all types, one page.
5. A two page test with all the options listed above.
[quad] Quadratic equations, standard forms, with real or com-
lex solutions, user's choice. In the public schools,
this subject area is often deferred to advanced algebra.
Skill-Oriented Algebra Page 3 IBM Compatibles