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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. Learn to read
notes and textbooks like a lawyer, so that no nuance, no subtlety and no
clause escapes your attention. |
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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
liinear 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.
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Optional
Electromotive Force (EMF) and Convention Current Flow
Current flow in electric circuits is explained by the presence of an
electromotive force (batteries, power supplies) which drives charge particles
(electrons) along wires and through other circuit elements. Conventional
current is the direction that positive particles (charges) would flow along a
wire if they could move along a wire, and that is opposite to the direction of
negative particles (electrons) movement.
We explain the movement of current (usually made of electrons) through wires
and circuit elements by the presence of a voltage difference across the
terminals of a energy supply (source).
Assumption: There is a voltage difference between the terminals of a
circuit element (resistor or light bulb perhaps) and between the terminals of
a power supply (a box plugged into the wall or a battery) which drives charges
particles (electrons) around a circuit through one or several paths.

But the negative charges (electrons) are moving in the wire - positive charges
are not moving.
The direction in which positive charges would move along a wire (if they
could move) is gives the direction of conventional current flow.
Franklin and others in exploring electricity thought that electricity was a
fluid with positive and (?) negative particles that moved through wires. Only
later did researchers discover that positive charges did not move through
wires but negative wires did. But the convention for describing current flow
was set and (presumably) in use. So the convention stayed. But as a student
you have to remember that only negative charges on electrons flow through
wires and do so in the direction opposite to that of the conventional
(positive particle) flow.
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www.whyslopes.com
Electric Circuits Notes, Ad hoc
More on Electricity Circuit Elements EMF - Voltage I EMF - Voltage II Kirchoff's First Law Kirchoff's 2nd Law Series Circuit I Series Circuit II Series Circuit III Series Circuit IV Resistors in Parallel I Resistors in Parallel II Wire Resistance I Wire Resistant II Wire Resistant Math I Wire Resistance Math II Wire Resistant Math III Wire Resistant Math IV Conductance I Conductance II Energy Power I Energy Power II Energy Power III Energy Power IV Energy Power V Energy Power VI (Heat) Energy Power VII (Heat) Energy Power VIII (Heat) Energy Power IX (Heat) Problem Checklist I Problem Checklist II
Problems
Sit down and study -
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