The sign for "percent" evolved by gradual contraction of the Italian term per cento, meaning "for a hundred". The "per" was often abbreviated as "p."—eventually disappeared entirely. The "cento" was contracted to two circles separated by a horizontal line, from which the modern "%" symbol is derived.
PERCENTAGE
How long will the drug stay in our system?
Key questions
1. What is the meaning of percentage?
2. How do we convert between FDP?
3. Can we write one quantity as a % of another?
4. How do we find a percentage of an amount?
5. How can we increase or decrease by a %?
6. Can we problem solve with %'s?
~4 lessons
Literacy
stories that set a frame or background
stories that accompany or intertwine
stories that introduce
stories that explain
stories that ask a question
stories that entertain
Fractions in Disguise by Edward Einhorn
Introducing...
understanding %'s booklet - 1, 2
understanding percentages - 1, 2
fdp convert - 2
%'s of money - 4
% of amount grid - 4
% of amount maze - 4
% of (fluency) - 4
marks to % - 3
matching %'s - 4
fdp visual (fluency) - 1, 2
Developing...
% increase = final amount - 4, 5
dissecting a square - 1, 2, 4
smile workcards pack 1 - 1, 2, ,3, 4, 5
smile workcards pack 2 - 1, 2, ,3 4, 5
follow me - 1, 2
calculated colouring - 2, 3
odd one out - 2, 5
percentage boxes - 1, 3, 4, 5
percent of - 4
100% equals - 1, 4
narrative
Review...
is it fair - 5
% change - 5
penguins - 3, 5
percentage multipliers - 4, 5
pmp percentages - 1, 2, 3, 4
fdp smile book 1 - 1, 2, 3, 4, 5
fdp smile book 2 - 1, 2, 3, 4, 5
modern art maths - 2, 3, 5