Chpt1 Section 2           Measuring


Circumference  The distance around a circle or ball.

Density            The mass of 1 cm^3  of a material.

Derived unit                 A unit of measure obtained from two or more base units.

Diameter                      A straight line that crosses a circle through the center.

Formula                       A group of symbols that make a mathematical statement.

                                   A representation of a substance using symbols for its
constitutional                              elements.

Mass (hmotnost)          The amount of material in something (the same everywhere).

Radius  - pl. radii          the distance from the center to the edge of a
circle.

SI                                Initials for International System of Units.

Volume                        The amount of space that an object takes up or can be filled with.

Weight                         The pull of gravity on nearby objects.


                                   Numbers and Operations


Numbers:        even (2,4,6,..)      odd  (1,3,5,…)

Numerals:       Arabic             Roman

Fractions:       a half,   a third, a fourth/a quarter, a fifth

                        decimal point, the tenth, the hundredth, the thousandth

Symbols:         percent, infinity, (not)equal to, greater than, less than

Operations:    addition (plus) – result/answer

subtraction (minus) - remainder

multiplication (multiplied by, times) – product

division (divided by) - quotient

power (squared, cubed )

root (square/cube/fourth)


            Geometry


Draw  small pictures of the lines, angles and shapes:

Lines:              straight parallel            curved             spiral
perpendicular

Angles:           right                 obtuse
acute                           reflex

Shapes:           square, rectangle          - diagonal

                        triangle – base

                        circle – circumference  arc                   diameter
radius

                        segment - the area between a chord and an arc
                        sector - the area between two radii

                        ellipse              trapezium         parallelogram   (rhombus,
rhomboid)


Three-dimensional Shapes:  Give the adjectives:
cube-                                                 sphere-
cylinder -                                 cone -
pyramid




Check the correct pronunciation:


Arabic             Roman             equal                quotient            obtuse
acute                diagonal           rectangle            triangle diameter
radius               trapezium         sphere              cylinder
circumference              the  thousandth


Choose the expressions with the stress on the second syllable: