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Alyssa and Maryrose's Unproject :)

Page history last edited by PBworks 15 years, 5 months ago

Unproject Partners

Alyssa  : Working on Alegebra

Maryrose  : Working on Geometry

 

Note to self : Fix up pictures in adobe. :)

 

Algebra :

the branch of mathematics that deals with general statements of relations, utilizing letters and other symbols to represent specific sets of numbers, values, vectors, etc., in the description of such relations.

 

from : http://dictionary.reference.com/browse/algebra

 

Algebra is about BALANCE

STEPS FOR SUCCESS

  1. Isolate the variable

 

Key Words

Variable : a letter or  symbol that represents a number.

In the equation :  n + 3 = 10

n = varaible

 

Expression : n + 3 is an expression because there no = sign. This means n + 3 is a PATTERN with many answers.

 

Equation: n + 3 = 10 is an equation because "n" can be only 1 thing. The = sign, makes n + 3 = 10 and equation.

 

Recursive Patterns

a pattern that goes down the table is either x or y

 

Funtional Pattern

  • you say, I say pattern
  • what do you do to x to get y
  • creates an algebraic expression

 

Words that mean +-x/

bubbleshare errorPlugin error: That plugin is not available.  

 

Using Subtraction & Addition

-9 = n+ 3

You can move an answer and = sign to the right of the equation.

 

5 = 3+2

      3+2=5

 

-9 = n+3 is the same as n+3 =-9

2n=6

dividing does not exist.

 

2n=6

2n/2=6/2

 

Using Multiplication & Division

soon to come

 

2 step problems

soon to come

 

Questions

Write it in an algebraic expression.

 

3 times a number =

3 more than a number =

3 decreased by a number =

3 less than a number =

8 more than 3 times a number =

8 less than 3 times a number =

 

 

i'll add more later~

 

 

 

 

 

 

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Surface Area :

The surface area of a space figure is the total area of all the faces of the figure.

 

Prism :

A prism is a space figure with two congruent, parallel bases that are polygons.

 

Area :

The area of a figure measures the size of the region enclosed by the figure.

 

Perimeter :

The perimeter of a polygon is the sum of the lengths of all its sides.

 

 

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Area of a Rectangle :

The area of a rectangle is the product of its width and length.

 

 

Photo Sharing and Video Hosting at Photobucket

 

L x W = Photo Sharing and Video Hosting at Photobucket

Length = base of a rectangle

Width = weight of a rectangle  

length and width make a right angle.

 

 

Photo Sharing and Video Hosting at Photobucket

 

L x W = Photo Sharing and Video Hosting at Photobucket

5cm x 3cm = 15cm2

 

Volume:

Rectangular Prism

- area of the base x height

     (LxW)H

 

 

Photo Sharing and Video Hosting at Photobucket

 

LxWxH

20cmx5cmx10cm = 1000cm3

 

 

Photo Sharing and Video Hosting at Photobucket

 

Area of a Triangle :

Conside a triangle with base length b and a height h. The area of the triangle is 1/2 x b x h.

 

Volume:

Triangular Prism

- area of the base x height

 

 

Photo Sharing and Video Hosting at Photobucket

 

 

Photo Sharing and Video Hosting at Photobucket

 

Area of a Circle :

The area of a circle is Pi x r2 or Pi x r x r, where r is the length of its radius.

 

Circumference of a Circle :

The distance around a circle. It is equal to Pi (Photo Sharing and Video Hosting at Photobucket) times the diameter of the circle. Pi or Photo Sharing and Video Hosting at Photobucket is a number that is approximately 3.14159.

 

Area of a Circle :

If "L" is the side-length of a square, the area of the square is 12 or 1 x 1.

 

 

Volume:

Cylinder

- area of te base x height

 

 

Photo Sharing and Video Hosting at Photobucket

 

Photo Sharing and Video Hosting at Photobucket

 

Volume:

Cube

- area of the base x height

(LxW)H

 

 

 

LxWxH

10cm x 10cm x 10cm = 1000cm3

 

 

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 if it doesn't work click "this album" .. ill fix it up later .

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Links :

http://www.mathleague.com/help/geometry/area.htm

http://www.mathleague.com/help/geometry/3space.htm

 

 

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still working on it ..

 

 

 

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