Math Investigation eTwinning. Mission: Infinity...Affairs! Volume: Infinity | Page 33

All numbers on the number line. This includes (but is not limited to) positives and negatives, integers and
rational numbers, square roots, cube roots , π (pi), etc./REALNUMBERS
A continuous area which is free, available, or unoccupied./ SPACE
An integer that is a multiple of 2./EVEN
Describes the cardinality of a count ably infinite set. For example, the set of natural numbers is count ably
infinite. Aleph null (‫א‬0) is the symbol for this./COUNTABLE
A mathematical operation of addition./PLUS
All positive and negative fractions, including integers and so-called improper fractions. Formally, rational
numbers are the set of all real numbers that can be written as a ratio of integers with nonzero
denominator./RATIONALNUMBERS
Relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and
powers of ten./DECIMAL
Produced, introduced, or discovered recently or now for the first time; not existing before./NEW
A convincing demonstration that some mathematical statement is necessarily true./PROOF
Any of the symbols 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 used to write numbers./DIGIT
An establishment providing accommodation, meals, and other services for travelers and tourists, by the
night. /HOTEL
A break or hole in an object or between two objects./GAP
A numerical quantity that is not a whole number./FRACTION
A thing’s dimensions or magnitude; how big something is./SIZE
Perfectly flat and level. For example, we can think to the horizon. So is the floor /HORIZONTAL
A contemplative and rational type of abstract or generalizing thinking, or the results of such
thinking./THEORY

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LYKEIO SCHIMATARIOY, GREECE

- VALLAURI FOSSANO, ITALY

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