We study identities and their manipulations.

In particular, w study using brute force, as well as identities with fractions.

wangweidong Post in Algebra 2, Fall 2018, Teaching info，

16
September
2018

Comments Off on AoPS Algebra 2B, Lesson 2, Fall 2018, 9/16/2018

We study identities and their manipulations.

In particular, w study using brute force, as well as identities with fractions.

wangweidong Post in Fall 2018, Homework, Math 9, Teaching info，

16
September
2018

Comments Off on Math 9. Lesson 2, Fall 2018. 9/16/2018

Two events are called to be independent events if the occurrence or non-occurrence of one event does not affect the probability of the other event.

If A and B are independent events, the probability of both events A and B occurring is the product of their individual probabilities:

P(A and B) = P(A) * P(B)

With this, we can simplify tree diagrams when dealing with problems with multiple same items by simply marking their probabilities.

When two (or more) events are dependent to each other, we cannot use the product rule, but we can still use the tree diagrams to help us finding probabilities.

Homework:

Print these pages: Page 1, Page 2, Page 3

Workbook Page 12, #6 – #10, #16 – #20.

wangweidong Post in Fall 2018, Homework, Math 9, Teaching info，

09
September
2018

Comments Off on Math 9, Lesson 1, Fall 2018, 9/9/2018

We start on probability. Students should have learned some basic concepts before about simple probability, the concept of a sample space with events consisting of some outcomes. In this chapter ,we study probabilities with multiple stages.

When a random experiment involves two stages, we can use a rectangular grid, called a probability diagram, to represent the sample space to help us find probabilities.

If a random experiment has two or more stages, we can use a tree diagram to represent the process, which should help us see all the possible outcomes and figure out the outcomes associated with a particular event.

We then talk about mutually exclusive events. In a sample space, two events are mutually exclusive if they cannot occur at the same time. If A and B are two mutually exclusive events, the the probability of A or B occurring is: P(A or B) = P(A) + P(B).

Homework:

Print these pages: Page 1, Page 2

Workbook Page 11, #1 – #5, #21.

wangweidong Post in Algebra 2, Fall 2018, Teaching info，

09
September
2018

Comments Off on AOPS Algebra 2B, Lesson 1, Fall 2018, 9/9/2018

Today is the first class for Fall semester, but we picked up from where we left off for Spring semester. We study summation and product notation and how to use them to help us dealing with sequences and series’es. We also learn how to evaluate such summation and product notations, especially with nested ones.

This wraps up Chapter 10 and we will start Chapter 11 next week.

wangweidong Post in Math 9, Spring 2018, Teaching info，

17
June
2018

Comments Off on Math 9, Lesson 16, Spring 2018, 6/17/2018

We went over the final exam question by question.

This is the last class for Spring semester. Wish everyone have a wonderful summer time!

wangweidong Post in Algebra 2, Spring 2018, Teaching info，

17
June
2018

Comments Off on Algebra 2, Lesson 16, Spring 2018, 6/17/2018

Today we study geometric sequences and serioes.

This is the final class for Spring 2018. We will pick up right from we stop today for Fall 2018, as AOPS Algebra 2B.

Hope to see you again in the Fall and have a great summer!

wangweidong Post in Algebra 2, Spring 2018, Teaching info，

10
June
2018

Comments Off on Algebra 2, Lesson 15, Spring 2018, 6/10/2018

We start a new chapter, Chapter 10. Today we study arithmetic sequences and series.

wangweidong Post in Math 9, Spring 2018, Teaching info，

10
June
2018

Comments Off on Math 9, Lesson 15, Spring 2018, 6/10/2018

We have our final exam today. Good luck to every student!

wangweidong Post in Algebra 2, Spring 2018, Teaching info，

04
June
2018

Comments Off on Algebra 2, Lesson 14, Spring 2018, 6/3/2018

We finish Chapter 9 by studying how to factor multi-variable polynomials. We learn factor theorem for multi-variable polynomials.

wangweidong Post in Homework, Math 9, Spring 2018, Teaching info，

04
June
2018

Comments Off on Math 9, Lesson 14, Spring 2018, 6/3/2018

We further practice solving logarithm and exponential problems. This is to get students more familiar with using different tools/ways to solve problems.

Based on majority students’ preference, we will have our final exam next week. We will go over the exam on the last lesson, which will be 6/17.

Homework: Page

13.5.1 – 13.5.5