7th Grade Pre-Algebra Assignment Sheet #16             January 22, 2008

 

Verse of the Week

7    The law of the LORD is perfect, restoring the soul;

     The testimony of the LORD is sure, making wise the simple.

8    The precepts of the LORD are right, rejoicing the heart;

     The commandment of the LORD is pure, enlightening the eyes.

9    The fear of the LORD is clean, enduring forever;

     The judgments of the LORD are true; they are righteous altogether.

10  They are more desirable than gold, yes, than much fine gold;

Sweeter also than honey and the drippings of the honeycomb.                 Psalm 19:7-10

 

Tuesday, January 22, 2008

q  Chapter 5 Test is due today!

q  Drills: CalcuLadders

q  Discussion: Chapter 1 Review – Mathematical Ways of Thinking

q  Discussion: Chapter 2 Review – Number Sequences

q  Discussion: Chapter 3 Review – Functions and Their Graphs

 

Wednesday, January 23, 2008

q  Drills: CalcuLadders

q  Review:  Key Concepts from Chapters 4-5 (see other side)

q  Reading: Jacobs: review Chapter 4 (pp. 184-234)

q  Reading: Jacobs: review Chapter 5 (pp. 246-310)

q  Things you can go over to review and prepare for the Semester Final:

o   Tests, Summary & Review (end of each chapter)

o   Re-work incorrect exercises from previous assignments (plus you get additional credit for turning in these corrections!)

 

Thursday, January 24, 2008

q  Drills: CalcuLadders

q  Test Results: reviewing results of Chapter 5 Test

q  Discussion: Chapter 4 Review – Large Numbers and Algorithms

q  Reading: Jacobs: review Chapter 4 (pp. 184-234)

 

Friday, January 25, 2008

q  Drills: CalcuLadders

q  Review:  Key Concepts from Chapters 1-5 (see other side)

q  Things you can go over to review and prepare for the Semester Final:

o   Tests, Summary & Review (end of each chapter)

o   Re-work incorrect exercises from previous assignments (plus you get additional credit for turning in these corrections!)

 

Monday, January 28, 2008

q  Exercises: First Semester Final (handout)                                  (due Tuesday, 1/24)

o   This test is to be taken closed-book and individually.

 


Key Concepts – First Semester

 

q  Chapter 1 Review – Mathematical Ways of Thinking

o   Inductive Reasoning (from the particular to the general) - Theories

o   Deductive Reasoning (prove conclusively using logic or exhaustive possibilities) - Theorems

q  Chapter 2 Review – Number Sequences

o   Arithmetic Sequences – Common Difference (can be positive or negative)

o   Geometric Sequences – Common Ratio (can be greater than one or less than one)

o   Binary Sequence – specific case of a geometric sequence

o   Power Sequences – Squares, Square Roots, Cubes, Cube Roots

o   Fibonacci Sequence – the Golden Ratio Φ (phi)

q  Chapter 3 Review – Functions and Their Graphs

o   Definition of a Function

§  can be represented by a formula, a table or a graph

o   Coordinate Graph (Rene Descartes) – (x, y) coordinates

o   Functions with line graphs (y = x)

o   Functions with curved graphs (y =x2, y = x³, y = 1/x)

o   Interpolation and Extrapolation

q  Chapter 4 Review – Large Numbers and Logarithms

o   Exponent Math


§  na · nb = n(a + b)

§  na χ nb = n(a – b)

§  (na)b = n(a * b)

§  n0 = 1


o   Powers of Ten

§  Multiply by Ten:      move decimal point to the right and add a zero

§  Divide by Ten:         move decimal point to left and remove if zero

o   Names of large numbers

§  million, billion, trillion, quadrillion, quintillion, etc.

o   Scientific Notation:   a x 10b

§  coefficient a is at least 1 but less than 10

§  exponent b is an integer

o   Logarithms – shorthand way of multiplying and dividing large numbers using their exponents

§  Binary Logarithms use powers of 2

§  Decimal Logarithms use powers of 10 (convenient when using Scientific Notation)

o   Exponential Functions (y = nx)

q  Chapter 5 Review – Symmetry and Regular Figures

o   Line Symmetry, Rotational Symmetry

o   Regular Polygons – sides are same length, angles are equal

o   Mosaics – regular, Semiregular

o   Regular Polyhedra – 5 Platonic Solids

o   Semiregular Polyhedra – 13 Archimedean Solids

o   Pyramids and Prisms

o   Euler’s Formula:          Faces + Corners = Edges + 2