Grade 11

welcome
welcome
Choose the correct subject for each picture
Statistics, Economics, History, Physics, Geography,
Chemistry, English, Mathematics,Gymnastics,Civics
Geography
Chemistry
Mathematics
Gymnastics
History
English
Geography
Chemistry
Mathematics
Gymnastics
History
English
Calculations
Names
2+2=4
adding
subtracting
multiplying
dividing
4-2=2
2 x 2=4
4 : 2=2
I.Vocabulary
1.a/ Give the names of the following calculations
Figures
Names
triangle
circle
angle
I.Vocabulary
1.b/ Give the names of the following figures
sphere
diameter
radius
1
2
3
4
5
6
I.Vocabulary  2.Give the branches of mathematics, basing on what provided
Branches
4+4-2=6
2x+4 =6
arithmetic
geometry
calculus
trigonometry
algebra

h

d
h x d
S= ------
2
1
2
3
4
5
II/Definitions of some words1.True/false sentences
True
False
a.Arithmetic is mathematical ideas stated in letters and signs
b.Geometry is study of form
c.Algebra is simple calculations with numbers
d.Geometry is dealing with the relations of angles and sides
of triangles
e.Calculus is a method of calculation
f. Triangle is a figure with three sides and three angles
g.Angle is a figure between two meeting lines or surfaces
x
x
x
x
x
x
x
h.Diameter is a straight line from the centre to the side of a
circle
x
i.Radius is a straight line from side to side through the centre
of a circle
x
j.Shorthand is a method of rapid writing in letters and symbols
x
II/Definitions of some words2.Correcting the above definitions
a. is simple calculations with numbers
b. is study of form
c. is mathematical ideas stated in letters and signs
d. is dealing with the relations of angles and signs of triangles
e. is a method of calculation
f. is a figure with three sides and three angles
g. is a space between two meeting lines or surfaces
h. is a straight line from the centre to the side of a circle
i. is a straight line from side to side through the
centre of a circle
j. is a method of rapid writing in letters and symbols
Arithmetic
Geometry
Algebra
Trigonometry
Calculus
Triangle
Angle
Radius
Diameter
Shorthand
III/ Completing Sentences: Use the words from the text to complete the following sentences
1. Primary school pupils learn such simple calculations as counting, _____, _________ , _________ and _______ .
2. Some branches of mathematics are _________ , _______ , _________ , _______ and __________.
3. If we want to say that in any circle the _________ is twice the ______ ,we can write d=2r.
4. The earth is a ______ .
5. When you study algebra, you use most letters and ____.
adding
subtracting
multiplying
dividing
arithmetic
algebra
geometry
calculus
trigonometry
diameter
radius
sphere
signs
One intelligent device which can solve complex mathematical problems quickly is
electronic computers
See you!
IV/ Home work
Learn the lesson again
Write a short paragraph about “mathematics”, one of the subjects which play an important part in our lives
See you!
Thanh you for your listening!
Thanh you for your listening!
See you!
IV/ Home work
Learn the lesson again
Write a short paragraph about “mathematics”, one of the subjects which play an important part in our lives
See you!
Thanh you for your listening!
Thanh you for your listening!
See you!
IV/ Home work
Learn the lesson again
Write a short paragraph about “mathematics”, one of the subjects which play an important part in our lives
See you!
Thanh you for your listening!
Thanh you for your listening!