Math 7A, Lesson 1, 1/26/2014

Weidong Posted in Homework, Spring 2014, Teaching info
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Today starts the 2013-2014 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, 1/19/2014

Weidong Posted in Fall 2013, Teaching info
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Today is the last day of Fall 2013 semester, and is also our final exam day. I will communicate the test result to you individually, as usual.

Spring 2014 semester starts 1/26/2014 and today is the last to pay your registration due without having to pay the $10 registration fee. So if you have not registered yet, or have not paid yet, do it today.

 

 

Math 7A, Lesson 15, 1/12/2014

Weidong Posted in Fall 2013, Homework, Teaching info
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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 1/19/2014.

Students should go over their 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, 1/5/2014

Weidong Posted in Fall 2013, Homework, Teaching info
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Welcome back! Hope everyone had a wonderful holiday season!

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)