Appetizers and Lessons for Mathematics and Reason (www.whyslopes.com)
Entrance Level 
||Définition d'une variable || Algèbre || Arithmetique || Logique ||La raison basée sur les règles et modelés||

Online Volumes
1,  Elements of Reason.
1A. Pattern Based Reason 
1B. Math Curriculum Notes
2. Three Skills for Algebra
3. Why Slopes & More Math
 (Optional Book Orders)
More Site Areas 
1. Help Your Child or Teen Learn 
2. Solving Linear Equations
3. Fractions Ratios Rates Proportions & Units
4. Euclidean Geometry
5. Analytic Geometry/Functions 
6. Number Theory
7. More Calculus
More Site Areas 
8. Complex Numbers 
9. Qc Maths  Education  
10. Secondary IV(?) maths
11. Real  Analysis 
12. LaTeX2HotEqn:
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15. Algebra, Odds & Ends, Etc
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16. Math Education Essays
17**. Telling & Working with Time
18**. Maps, Plans & Drawings
19**. Quantitative Skills for  home and  work, etc, etc 
20**. Statistics .
** Means Under-construction.

Test the Twiddla Whiteboard

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HIP, HIP, HIP, Hooray
YOU are better than YOU think. Show yourself  how:
  

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Read  logic chapters 1 to 5  in online volume Three Skills for Algebra  for greater skills & confidence in  work 
and study

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 Logic chapters 1 to 5  re- appear not in sequence, as is or longer,  in  Volume 1A,  Pattern Based Reason, Bon Appetite.

Logic Mastery
 Amazing, Amusing, Amorous,  Delicious, Delightful, Edifying, Strengthening Elixir. 
It eases work & learning difficulties Makes the hard easier. Opens eyes. Leads to greater precision.
in reading and
writing

Logic mastery makes the hard, easier. Logic mastery  leads to better, stronger and richer comprehension.  Logic mastery  improves reading and writing.  Logic mastery ease learning difficulties.  Logic mastery gives a headstart.  In sum, logic mastery  will develops critical thinking, improve reading and writing, and give a firmer base for work and studies at many levels. Good luck.


After logic  (a) continue reading Three Skills for Algebra, chapters 8 to 14  and do so alongside site area on solving liinear2007 Equations ; or (b) see this calculus starter lesson and Volume 3, Why Slopes  & More Math, chapters 2 to 6;

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Caution: Site advice is approximately correct, for some circumstances, not all. That leaves room for thought

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What may be learnt and when depends on how skills and concepts are developed. Making the hard easier and clearer will allow earlier & richer development of skills and concepts.


Try the Twiddla Whiteboard. In principle, it  allows to people to draw and chat together online on a copy of this webpage or a clean sheet. The chat may be via text or audio.  Visit www.twiddla.com to set up whiteboards to work with the webpage of your choice.

For online automated help in senior high school maths & calculus, visit  quickmath.com  For Automatic Calculus and Algebra Help with derivatives, integrals, graphs, linear equations, matrix algebra, visit calc101.com  With  overlap, each site quickmath & calc101offers a different range of services, some free, some not, all based on webmathematica. Good luck.

 

 

Advice for Secondary I Students

Mathematics Lift-Off Check-List

Primary school should give you whole number and fraction skills and sense. You should know

  1. how to write whole numbers as decimals,
  2. the times and sums table
  3. how to recognize when a whole number is a multiple of 2, 3, 5 or 10.
  4. the place value of each position in a decimal, before and after the decimal point.
  5. how to add, subtract and multiply whole numbers exactly, and how divide whole numbers by long division to obtain a quotient and a remainder. Here knowledge of the times and sum tables is useful.
  6. how to add, subtract and multiply whole numbers exactly, and how divide whole numbers by long division to obtain a quotient and (?) a remainder when the numbers are given by decimals with digits before and after the decimal point.
  7. the meaning of unit fractions  1/2, 1/3, 1/4,1/5, .... 1/100 etc These are adjectives describing how much of a quantity or object is present.
  8. the meaning of simple fractions m/n  = m times 1/n  = a whole number multiple of a unit fraction. These are (compound) adjectives saying or describing how many unit fractions of a quantity or object is present.

Simplification of Fractions - Unifying Theme

  1. how to simplify fractions or reduce them by canceling common factors from numerators and denominators. Here knowledge of the times table and how to recognize when a whole number is a multiple of 2, 3, 5 or 10. For improper fractions is it better to simplify first or is it better to express as a whole number plus a smaller fraction, and simplify the latter? What requires less work?
  2. what does it mean for two fractions to be equivalent including (i) how a unit fraction may be equivalent to a simple fraction, and how  multiples of the latter simple fraction are equivalent to multiples of a unit fraction.  Give some geometric examples.
  3. how to multiply fractions - how to calculate products efficiently. While the product of fractions has denominators = the product of the denominator of the product factors, and numerator = product of the numerator of the factors in the product, simplifying of the product is done more efficiently by canceling common factors of the factors.  See examples for exact meaning or how as the word factor appears to many times here.
  4. the meaning of a product - what does it describe.
  5. how to divide fractions - how to turn  division by a fraction into a multiplication by its reciprocal or multiplicative inverse
  6. the meaning of fraction divisions or quotient of fractions - what it describes in terms of how many time one line segment goes into another line segment when both segments are fractional multiples, improper or proper, of a unit length.
  7. the existence of two ways to write the quotient of fractions, and how one way gives what is called a compound fraction.
  8. how to add  and subtract fractions with like denominators and simplify the result.
  9. how to add and subtract  fractions with unlike denominators using any common denominators, and why smaller or  least common denominators usually leads to less work when simplifying the resulting sum or difference.
  10. how to calculate the least common denominator of two whole numbers via the list method, and why the list method is awkward when the whole numbers are not small?

Primes and their Use

  1.  

Errors and Error Control in Measurements and in Calculations.

How to indicate accurarcy or maximum possible error using Scientific Notation

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Three Links for Teachers:
(i) First Year High School Math - Lesson Plans with Fraction Focus (ii) Second Year High School Math - Lesson Plans with an algebra focus (iii) Algebra Lesson Plans

 

Help U Learn/ Teach

  1. Algebra
    words before symbols - direct & indirect use of formula, numerical versus algebraic solutions - what is a variable (more words)
  2. Arithmetic
    - exercises
    - with fractions
    - videos on primes, lcm, gcm,lcd, square roots etc
  3. Calculus - geometric preview, algebraic preview,
    3 study guides,
    much more
  4. Complex numbers
    -starter lesson with java applet - easy consequences  for trig & vectors in the plane
  5. Education
    - Empirical Course Design & Delivery
  6. Fractions
    - alone
    - by rote
    - with algebra
    - videos
  7. Functions - introduction
    hindsight - composition aka
    substitution
    -
  8. Geometry, Euclidean - Correspondence of trianglesTriangle construciton,  duplication & Isometry - Failure of ASA & the // line postulate - angle sum in triangles -// grams - Triangle Similarity
  9. Geometry- Analytic - functions, polynomials, complex numbers, unit circle trigonometry
  10. Logic
    - First Steps -
    Symbols in Logic -
     Occurrence & Truth Tables - Indirect Reason -Indirect Reason More
  11. Proportionality
    - Definition - Direct & Indirect Use - Numerical versus Algebraic Solutions
  12. Real Analysis
    - Decimal View of concepts and of proofs
  13. Rules &Patterns in Science, Technology & Society - Pattern Based Reason
  14. Mathematical Reasoning, empirical, inductive or deductive
  15. Units
    - in rates & slopes & (?) derivatives
    - in ratios & proportions - slopes & rates included
  16. Complex Numbers & Vectors & Trig
    trig expression for dot & cross - cosine law

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