geometry chapter 8-10

Geometry

For the geometry we learn about angle, types of angle, line, point, ray, and  more.

Then we also do the reading mathematics for the chapter 10.

Chapter Contents

8:01 Reading Maps

8:02 Coordinates and Number Planes

8:03 Introducing straight line graphs

8:04 Graphing Straight Lines

8:05 Lines Parallel to the axes

8:06 Further Graphing

10:01 Adjacent Angles

10:02 Angles at a Point and Vertically Opposite Angles

10:03 Angles associated with parallel lines

10:04 Angle sum of triangle

10:05 Angle sum of quadrilateral

10:06 Isosceles and Equilateral Triangles

10:07 More involved numerical problems

11:01 Review of area from last year

11:02 Areas of special quadrilaterals

11:03 Formula for areas of special quadrilaterals

11:04 Volumes of prisms

11:05 Surface Area of prisms

An angle measures the amount of turn. the types of angles are acute angle, obtuse angle, right angle, straight angle, and reflex angle.

Acute angle is an angle that is less than 90°
Obtuse angle is an angle that is more than 90°
Right angle is an angle that has an measurement of 90°
Straight angle is an angle that is precisely 180°
Reflex angle is an angle that is greater than 180°

Line is a long thin mark made by a pen, pencil, etc. The characteristic of a line is straight, has no thickness, extends in both directions without end.

Point is an exact location that has no size but only position. Points usually has a name, Often named by a letter like "A" or "B" etc.

Ray is a  line with a start point but no end point.

We also make a drawing using coordinates in 8:02 fun spot
the result will be a Spartacus face.

Algebra unit 2 chapter 6-7

Algebra

We start our first lesson about algebra at 14/10/14 in chapter 6 and 7. Algebra is the use of pronumerals or letter to represent number in solving problems. We also learn about algebra expression, variable, coefficient, constant and more.

Chapter Contents

6:01 Patterns and Rules review
6:02 Addition and Subtraction of like terms
6:03 Multiplication of pronumerals
6:04 Division of pronumerals
6:05 Multiplication and division of pronumerals
6:06 Using Algebra
6:07 Index notation
6:08 Grouping symbols
6:09 Factorising
6:10 Algebraic Fraction

7.01 Inverse Operation

7.02 Solving Equations 

7.03 Equations with pro numerals in both sides

7.04 Equations and Grouping Symbols

7.05 Formulae

7.06 Solving Problems using equations

7.07 Graphing inequation 

7.08 Solving Inequations

Then in 6:09 we learn about factorizing for classwork 6

Example: 2y + 6: 2 x y + 2 x 3 => 2 (y + 3)

We also learn about equation

# Solving equation is like balancing scales

# With equations we know that one side is equal to the other

Example: a + 7 : 10

                 a + -7 : 10 – 7

                 a + 0 : 3 => a : 3

After that we learn about inequation

# inequations have more than one solution

# an iquation is an open mathematical sentence where the ‘equal’ sign has been replaced by an inequallity sign.

# when solving inequation, we use the same rules as for equation. But when multiplying or divide an equation by a negative number, the inequality si muxt be reverse.

Example: x > 4

   

                x < 4-2 =) x< -8

Then we have been given a task to make a report about mathematics challenge in chapter 6:10. It's about expanding pronumerals product. 

Observation

number unit 1 chapter 2-4

Number

                 

                 For the first time I have been teach by Ms. Nuri, I learn about numbers. I learn how to solve numbers by percentage, fraction, ratio, decimal, and more. I also learn what is the function of number in our daily life. Each of us has been given an assignment, each of us should make a comic about the topic that we have been chosen. In the comic we should make a story of the function of the topic that we have chosen in our daily life. For my comic I have chosen 1;10 ( Direct Number). the story is about a girl has a dept that is bigger than her money and she need to find a way. Her dept is the negative and her money or saving is the positive. She need to use all her saving to pay the dept, then she need to find the rest of the money she need to pay.

Chapter Content:

2:01 Working Mathematically

2:02 Problem Solving Strategies

2:03 Problem Solving Strategies using Venn Diagrams

"Percent" is like 1 per 100. A percent also can be change into a fraction or decimal. The symbol of percentage is %

Fraction is a part of a whole. For the top number, we call it numerator. Also there is a name for the bottom number called denominator. The denominator number is the number of parts the whole is divided into. Example: Panda bought a pizza for his party. He also invited 5 of his friends. Then he cut the pizza into 10 parts or slice. He wanted to give his friends pizza. How many slice or piece of pizza did his friends got?

Total of friends: 5
Total of pizza slice or piece: 10

Fraction: 

After making the comic  we make a Reading Mathematics about how to solve fraction, decimal and percentage. In this Reading Mathematics, we also need to explain how to solve it and why we use that way to solve the answer.

For the explanation  fraction to a decimal: first we need to know the fraction or the numerator and the denominator or n/d then we need to divide the the numerator with the denominator(n÷d) in case you want to round off the decimal, you need to see the last digit. If the last digit

is 5 or more you need to round it up. But if the last digit is less than 5 then you need to round it down.

Example : 5/3 : 5÷3: 1.666 = 1.667

                                            

            In the note book we learn about percentage. In the percentage we learn how to convert percentage into number or decimal.

-          Finding a percentage of a quantity: to find a percentage of a quantity, write the percenate as a decimal (or fraction) then multiply by the quantity.

Example: 2/100 x 8000: 160

Introduction

Introduction

 Greetings, my name is Madeline Vania Widjaja. People call me Madeline or Maddy. 

In this semester I am going to explain and tell you about have I learn in this semester about  mathematics. My mathematics teacher is Ms. Nuri. In this semester me and my friends has through a lot of fun and stress full moments :)

Most of the resources that I use is from: http://www.mathsisfun.com/geometry/circle.html
                                                               : google image
                                                               : google web
                                                               : International Mathematics for the Middle Years 2
                                                               : www.mathopenref.com/circle.html
                                                               : www.purplemath.com/modules/meanmode.htm