Math



=Mathematics:=

Unit 9: Rational Numbers and the Coordinate Plane - 7 lessons
=Unit 5: Expression and Equations=
 * Order of Operations: Very Important!!!!**
 * 1st: Parenthesis **
 * 2nd: Exponents or Powers: 4 to the third power is 4 x 4 x 4 NOT 4 x 3**
 * 3rd: Multiply OR Divide left to right which one comes 1st.**
 * 4th: Add OR Subtract left to right which one comes 1st.**

=Unit 2: Area of Polygon - formulas - 2-D shapes=
 * Area of Square and Rectangle**: length x width


 * Area of Triangle:** base x height divided by 2


 * Area of Parallelogram**: length x width


 * Area of Trapezoid:** base + base x height divided by 2


 * Area of Regular Polygons** - pentagon, hexagon, octagon, etc: base x height divided by 2 x number of sides

=Unit 4: Surface Area - formulas - 3-D shapes= =Prisms= Base is a square = length x width x 2: Faces are rectangles = length x height x 4; Add base and faces together
 * Square Prism:**

length x width x 2 length x height x 2 width x height x 2 Add all 3 answers together
 * Rectangular Prism**: Base is a rectangle and faces are rectangles.


 * For the next 2 prisms: Normally when you find area of triangle you do Base x Height divide by 2. However, with the next two prisms, you don't have to follow that formula, because you have 2 bases. It is not necessary to divide by 2 then x by 2, they cross each other out.

Faces are rectangles and there are 3 = length x width(base) x 3. Add base and faces together.
 * Triangular Prism:** Base is a triangle = base x height

Base = base x height x the number of sides Faces are rectangles = length x width x number of sides Add base and faces together
 * Pentagonal, Hexagonal, and Octagonal Prisms**: Bases are Pentagon(5), Hexagon(6) and Octagon(8): There are 2 bases.

=Pyramids= Shapes that have **1** base and sides are triangles that form a point. Names are given according to base shape.

Base = length x width Faces = base x height x 4 divided by 2 OR base x height divided by 2 x 4 Add base and faces together
 * Square Pyramid:** square base and 4 triangular faces

Base = length x width 2 Faces = base x height divided by 2 x 2 OR base x height 2 Faces = base x height divided by 2 x 2 OR base x heigth Add base and faces together
 * Rectangular Pyramid:** rectangular base and 4 triangular faces with 2 different measurements.

Base = base x height divided by 2 Faces = base x height divided by 2 x 3
 * Triangular Pyramid**: triangular base and 3 triangular faces

Pentagonal: base is a pentagon with 5 triangular faces Hexagonal: base is a hexagon with 6 triangular faces Octagonal: base is octagon with 8 triangular faces If all = Base = base x height divided by 2 x # of sides Faces = base x height divided by 2 x # of sides Add base and faces together
 * Pentagonal, Hexagonal, and Octagonal Pyramids:**

Connect to math websites: School Link