Lifelong Learning Programme

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Title of the Experience
Nano-measurement presentation
Name of the teacher
Milena Gosheva
Country where it took place
School typology
High Secondary School
Thematic Area
Experience typology
Extracurricular activity
Type of contact
Description of the Experience
Theoretical concept: According to the international system of units (SI) "nano" means one billionth or 10-9. If we have a nano-"something" we have one billionth of the whole "thing" as for meters (distance, length), second (time), liters (volume) and grams (mass), which is a rather small part.
Prefix Dimension Recording:
kilo- 1000 m 1 x 103 m
hecto- 100 m 1 x 102 m
deca- 10 m 1 x 101 m
base 1 m 1 x100 m
deci- 0.1m 1 x 10-1m
centi- 0.01 m 1 x 10-2 m
milli- 0.001m 1 x 10-3 m
micro- 0.000001 m 1 x 10-6 m
nano- 0.000000001 m 1 x 10-9 m
pico- 0.000000000001 m 1 x 10-12 m
femto- 0.000000000000001m 1 x 10-15 m

Model explaining the theoretical knowledge:
Some examples of nanoscale objects:
A piece of paper is about 100,000 nanometers thick;
Human hair is roughly 50,000 to 100,000 nm long;
Nails are growing around a nanometer per second.
Blinking of eyes lasts approximately one billionth of the year (nanoyear).
Water molecule is ¼ nm large.
If we line 10 hydrogen atoms in a row it will be one nanometer long.
The cell membrane is about 9 nm thick.
Viruses are 70 nm in diameter average.
The diameter of the human DNA is 2.5 nanometers.
Atom gold has a diameter of 1/3 of the nanometer.

Comments on this Teachers Experience

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Date: 2014.10.28

Posted by Maria Dojcanova (Slovakia)

I really like the specific examples listed in nano-dimension experience. These small dimensions are very difficult for pupils to imagine. It is important that the teacher will be able (within the limits) to illustrate the real life examples of this dimension. These are interesting comparisons. I will certainly use some examples when teaching System of units.


Dissemination Seminar in Florence

31 October 2015 The seminar has been held in ITIS “A. Meucci” one of the schools involved within Goerudio project activities. Its main aim was to promote the results of the project toward a broad sample of stakeholders even overcrossing the number of people directly involved in the production of project outcomes. This purpose has been totally achieved especially thanks to the participation of students and teachers coming from different schools or from other classes instead of those ones directly involved within the project activities.