Math contest this coming Sunday

Weidong Post in Spring 2011, Teaching info
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We will have a school wide Math contest this coming Sunday, and our class will participate in it.

The contest questions are basically from the mini-Olympic contests, so they may not be easy to solve. They provide an opportunity for students to learn something interesting in Math. There is no need to prepare for this contest.

Of course, this contest is not mandatory. If your children don’t feel comfortable to attend this contest, they may choose to skip it do anything else in the class.

We won’t announce everybody’s test scores. We will just award the winners.

The winners will be chosen based on students’ regular school grades. In other word, several groups will be formed based on their regular school grades. We choose winner(s) from each group.

Review on 3/13

Weidong Post in Spring 2011, Teaching info
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Today we reviewed what we have learned in Chapter 9. We went through each section.

For those students who came in late or who have not learned certain parts, either in Chapter 9 or earlier chapters, it is up to you to make up for those parts.

We will have our mid-term exam next week. It will be a close-book test.

The week after the exam, our class will participate in the school wide math contest. More detail will come later.

NCLS Math 7A 3/6/2011

Weidong Post in Spring 2011, Teaching info
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Today we started the new chapter, CH 10, and covered 10.1, 10.2, 10.3. We talked about polynomial addition, subtraction, and multiplication. We talked a few often used formulae.

For addition and subtraction, it is important to combine only like terms. For multiplication, we talked about FOIL method for multiplying two binomials. For any two polynomial multiplication, just remember to multiply every term in one polynomial to every term in the other polynomial, and add them together.

For the special formulae, the following three are important to memorize:

(a – b)(a + b) = a^2 – b^2
(a + b)^2 = a^2 + 2ab + b^2
(a – b)^2 = a^2 – 2ab + b^2

For the homework:

P580, #47, 49, 51, 53, 55 – 62
P587, #36 – 47
P593, #27 – 42

Let me know if you have any question.

For this coming Sunday …

Weidong Post in Spring 2011, Teaching info
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For this coming Sunday, we will do a review of what we have learned for this semester, getting ready for the mid term exam the week after.