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Bryan’s
Third Grade Math Presentation of the year
2008 - 2009
Fives
5x1=5
5 x 2 = 10
5 x 3 =15
5 x 4 = 20
5 x 5 =25
5 x 6 = 30
5 x 7 = 35
5 x 8 = 40
5 x 9 = 45
5 x 10 = 50
5 x 11 = 55
5 x 12 = 60
Squaring numbers
12 =1
22 =4
2
3 =
9
42 = 16
52 = 25
62 = 36
72 = 49
82 = 64
92 = 81
102 = 100
112 = 121
Rounding
Rounding
5
4
6
7
3
2
1
0
8
9
10
Six’s
6x1=6
6 x 2 =12
6 x 3 = 18
6 x 4 = 24
6 x 5 = 30
6 x 6 = 36
6 x 7 = 42
6 x 8 = 48
6 x 9 = 54
6 x 10 = 60
6 x 11 = 66
6 x 12 = 72
Polygons and not polygons
All of these are not a polygon.
These are polygons
My Math Shapes
Small Red Square
Medium Green Circle
Large Blue Rectangle
Medium Orange Pentagon
Small Turquoise Hexagon
Medium Dark Red Trapezoid
Large Teal Triangle
Small Pink Cylinder
Medium Yellow Cube
Pie chart
4
Strawberry, 4,
21%
Lime, 3, 16%
Grape, 4, 21%
Lemon, 6, 31%
Orange, 2, 11%
The mode is 4.
Pears in math
Pears
Pears
3
6
9
12
Costs
$1
$2
$3
$4
Fraction from money
Fraction from money
•
•
•
•
•
•
Penny = 1 c = 1/100
Nickel = 5 c =1/20 = 5/100
Dime = 10 c =1/10 =10/100
Quarter = 25 c =¼ =25/100
Half dollar = 50 c =½ = 50/100
One dollar = $1.00 = 1 = 100/100
Congruent
Congruent
• Congruent means all sides are the same
just like a square. The size does not need
to be the same only the length matters.
Combining like terms
Combining Like Terms
• Combining like terms is like this 3y + 5y =
?y the number is the term + the y (or other
letter) so it is = to this 9y + 2y = 11y so the
answer of 3y + 5y is = to 8y so 1y x 1y =
?y is it 1y yes it is correct.
What is 1247 + 1113 =????
Here is the answer : 2360
Points and lines
Point
Line
Line Segment
Ray
Vertex
Parallel Line
Intersecting Lines
Perpendicular Lines
Angles
Angle
Right Angle
Acute Angle
Obtuse Angle
Straight Angle
Triangles
1 right angle
Scalene triangle
Isosceles triangle
Equilateral triangle
4 sided polygons
Parallelogram
Rhombus
Rectangle
Square
Trapezoid
Gas prices
Bryan's Gas Prices of Two Companies
$2.450
$2.400
$2.350
Arco
$2.300
Mobil
$2.250
5/
11
/2
00
9
5/
12
/2
00
9
5/
13
/2
00
9
5/
14
/2
00
9
5/
15
/2
00
9
$2.200
The Polygon Shifter
Once there was a point.
He got tired of being a point so he
turned in to a line.
Then he got tired of being a line so
he turned into line segment.
A
B
Then he got tired of being a line
segment so he turned into right
angle .
Then he got tired of being a right
angle so he turned into triangle.
Then he got tired of being a triangle
so he turned into a square .
Then he got tired of being square
so he turned in to a pentagon.
Then he got tired of being a
pentagon so he turned into a
hexagon
Then he got tired of being a
hexagon so he turned into a
heptagon
Then he got tired of being
heptagon so he turned into a
octagon.
Then he got tired of being octagon
so he turned in to a nonagon.
Then he got tired of being nonagon
so he turned into a decagon.
Then he got tired of being decagon
so he turned into a hendecagon.
Then he got tired of being a
hendecagon so he turned into a
dodecagon
Then he got tired of being a
dodecagon so he turned in to a
triskaidecagon.
And that’s the end
Factors
Factors
• Factors are numbers that is times to
another number to make a whole number
like this 3 times 4 equals 12 or 12 x 1 =
12. Got it?
The meaning of E pluribus
Unum
E Pluribus Unum = out of many one
Mixed numbers
MIXED FRACTION
is a fraction that has a whole
What is this number?
It’s 3 1/2
Patterns of 11
A pattern of 11 is 112 = 11 and 1112
= 121 the pattern is when 11112 =
12321
got
it?
2
•
•
•
•
•
•
•
•
•
11 = 11
1112 = 121
11112 = 12321
111112 = 1234321
1111112 = 123454321
11111112 =12345654321
111111112 = 1234567654321
1111111112 = 123456787654321
11111111112 = 12345678987654321
Primes
A prime is a number that can only
be divisible by 1. Like this one.
53
Leap frog
You are done
Tessellations
These are tessellations.
These aren’t tessellations.
Diameter
Diameter
Decimals
0.1 = 1/10
0.2 = 2/10
0.3 = 3/10
0.4 = 4/10
0.5 = 1/2
0.6 = 6/10
0.7 = 7/10
0.8 = 8/10
0.9 = 9/10
1 = 10/10 or 1 whole
Pythagoras
This is Pythagoras’s Pythagorean
Theorem
4 tiles
3 tiles
Bryan’s arrays
5,2
10,2
10,6
Puzzles
Can you make the rider go on the
cat
Measurements
1 milliliter =1,000 liters
Area
This is the area of the auditorium’s
carpet .
10.7 meters
13.6 meters
Total = 145.52 square meters
Area: the space inside a 2-D figure
Example: this is 20 SQFT
Percentage
Percentage
• Percentage is any number with a percent
sign like this one %. You can also make it
into fraction to like this one 50/100.What
does the percent sign mean? It means
100.
Möbius
Glossary
Bar graph
• A square graph that has number on each
end.
Century
• A century is 100 years.
Congruent
• All sides the same.
Decade
• A decade is 10 years.
Denominator
• A denominator is the bottom of a fraction.
Diameter
• A line that goes through any shape.
Digit
• A number that can’t pass 9.
Graph
• A picture and colors combined together.
hexagon
• A 6 sided polygon that has all sides
closed.
Mixed numbers
• Mix numbers are a number like 1 and a
fraction like ½ that = 1½.
Numerator
• The number that is on the top of a fraction.
Octagon
• A 8 sided polygon that all sides are closed
Odd number
• A number that is not even like 2 4 6 8 10
12 14 16 (etc.)
Parallel lines
• Lines that don’t intersect .
Pentagon
• A 5 sided polygon that has all sides
closed.
Perimeter
• The length and with.
Polygon
• A polygon is a shape that
Dozen
• A dozen is the number 12.
gross
• Gross is the number 144.
Bakers dozen
• A bakers dozen is the number 13.
Fort night
• Fort night is 14 days or nights.
Score
• Score is 20 years or days.
Millennium
• Millennium is 1,000 years.