7th Grade Pre-Algebra Assignment Sheet #15        January 17, 2006

 

Verse of the Week

17Therefore, if anyone is in Christ, he is a new creation; the old has gone, the new has come! 18All this is from God, who reconciled us to himself through Christ and gave us the ministry of reconciliation.                                                                 2 Corinthians 5:17-18

 

Tuesday, January 17, 2006

q      Chapter 5 Test is due today!

q      Drills: computation cards

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 18, 2006

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

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

q      Review:  Key Concepts from Chapters 1-3 (see other side)

q      Review: Jacobs: Chapter 1 (pp. 6-57)

q      Review: Jacobs: Chapter 2 (pp. 60-112)

q      Review: Jacobs: Chapter 3 (pp. 122-169)

 

Thursday, January 19, 2006

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 20, 2006

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)

 

Monday, January 23, 2006

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

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

o      You may use a calculator to check answers, but show your work!

 

 

 

 

 

 

 

 

 

 

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 Algorithms

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