Math 7A, Lesson 1, 1/27/2013

Weidong Posted in Homework, Spring 2013, Teaching info，
27 January 2013
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Today starts the Spring semester. Welcome back, old and new students.

We will be on the subject of geometry for a while. Today we covered congruent triangles. Three rules for deciding if two triangles are congruent:

1. SAS: two sides and the included angles. It is important that the angle has to be one between the two sides;

2. AAS: two angles and a corresponding side. With two angles the same, the third ones have to be identical as well. So it is important to see if the sides are indeed the corresponding ones.

3. SSS: side-side-side.

4. RHS: right angle hyptenuse and side. This one is for right-angled triangle.

We did some proof problems using the above rules.

Homework: Page 81-84, #1 – #6

 

Math 7A, Lesson 16, 1/20/2013

Weidong Posted in Teaching info，
20 January 2013
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Today is the final exam day for Fall semester, the day we have been waiting for 🙂

Good luck to every student!

Since a few people did not attend the class, I am posting the exam below. If you miss the exam, please print it out and do it at home. 80 minutes, close-book.

http://blog.newtonchineseschool.org/wangweidong/files/2013/01/Math-7A-2013-Fall-Final-Exam.pdf

 

 

Math 7A, Lesson 15, 1/13/2013

Weidong Posted in Teaching info，
13 January 2013
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Today is the review day. We go over what we have learned so far this semester, to get ready for the final exam next Sunday on 1/20/2013.

Students should go over the past homework. You can also do the following as the preparation:

Page 58, Test Paper 3;

Page 67, Mid-term Paper 1;

Page 72, Mid-term Paper 2.

 

Math 7A, Lesson 14, 1/6/2013

Weidong Posted in Fall 2012, Homework, Teaching info，
06 January 2013
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Welcome back! Hope everyone had a wonderful Christmas and New Year!

We talk about inequalities today, how to represent an inequality on the number line, how to solve an inequality by using the Addition and Multiplication Properties of Order.

The most important thing to remember is, when you multiply or divide a negative number on both sides, you need to remember to change the inequality sign, from ‘<‘ to ‘>’, or from ‘>’ to ‘<‘, or from “<=” to “>=”, or from “>=” to “<=”.

Here is this week’s homework from Page 64, 65 and 66:

3a, 3c 3e, 4 (a – g), 5a, 5c, 5e, 5g, 5i, 6 (a – j), 7 (a – d)