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Math Teachers Chatboard

by Stella

Feb 22, 2013

My students are fussing about factoring, graphing, completing the square, etc. They say all they need is the quadratic formula, that older students have told them that's all that they used in College Algebra.

In Algebra 2, do you make them learn all the other ways? If so, what is the justification?

view previous comments

Rich/CA/Math On 3/02/13, cj wrote: > Rich, I've used the box method, but lately I've found that teaching them > to multiply a and c, then find your factor pairs and factor by grouping > works. Some kids can do the box more or less intuitively, but most seem > to need a different process. Maybe I need to work on the box method > more? What are you...See More

Mar 3, 2013

Mrbdawg I teach students factoring, completing the square and the quadratic formula. The weakest use the quadratic method and the stronger students use tlhe method which works the fastest. I always test the students on all three methods.

n 3/01/13, Stella wrote: > Thank you very much for your replies. You are stating what I > believe, but s...See More

Mar 17, 2013

math text for Common Core

by Sue

Feb 23, 2013

Is anyone using one of the new common core textbooks or planning on adopting something soon. I am winging it right now without a textbook and the only decent one I can find is "Math IN Focus". Unfortunatly it requires one hour per day which my school is finding difficult to do. We need something next year and not sure what to do. Any suggestions???...See More

Betty Ann I heard a presentation about CPM materials. There seem to be quite a lot of good CC materials there, but the books don't seem attractive. We're still looking.

On 2/23/13, Sue wrote: > Is anyone using one of the new common core textbooks or > planning on adopting something soon. I am winging it right > now without a textbook and th...See More

Mar 10, 2013

Geometric Puzzle

by PedagoNet

Mar 2, 2013

Can you solve this one? Ask your students for help!

fbi.gov malware?

by algie 2

Mar 2, 2013

I tried to respond to a post and when I hit the submit button I was taken to an fbi.gov page about malware scams. Has this happened to anyone else?

LOL...it's the website owner playing tricks On 3/02/13, algie 2 wrote: > I tried to respond to a post and when I hit the submit > button I was taken to an fbi.gov page about malware scams. > Has this happened to anyone else?

A lot of people have been redirected to that page. Something in your post must have caused the (lame, outdated) auto-filter to assume you were trying t...See More

Mar 2, 2013

algie2 On 3/02/13, LOL...it's the website owner playing tricks wrote:

> Don't worry about it. If everybody here who's seen that > message were in danger of federal arrest, there would be half a > dozen people left walking around free to post anything at all.

Thanks so much for your reply; I thought I had some kind of malware on...See More

Mar 3, 2013

Finding Factors

by cj

Mar 2, 2013

Another teacher shared with me something I hadn't thought of and am wondering what you all think...

Let x and y represent the factors of a given number, so that xy=n. Therefore, y=n/x. Put that into the calculator and the table will give the factors. Example xy=42, y = 42/x. Look at the table and it will give the factors of 42.

I ...See More

Rich/CA/Math On 3/02/13, cj wrote: > Another teacher shared with me something I hadn't thought of > and am wondering what you all think... > > Let x and y represent the factors of a given number, so that > xy=n. Therefore, y=n/x. Put that into the calculator and the > table will give the factors. Example xy=42, y = 42/x. Look > at the table...See More

Mar 3, 2013

mtinnj Doesn't seem like much of short cut. However, your function is missing one small detail for your table, which maybe you meant to be obvious. Domain={x| 1

Mar 10, 2013

Researching use of technology in math classrooms

by kostub

Mar 5, 2013

I am researching the use of interactive technology in middle and high school math classrooms. I am specifically interested in the challenges involved in doing and grading homework assignments or assessments and how technology could help with these challenges.

If you are a middle or high school math teacher and available for a 15-20 minute...See More

Small Group Math Instruction

by Gary

Mar 5, 2013

Hello,

I am a teacher, currently working on completing the research requirements for my doctorate in education. My study focuses on utilizing small group instruction techniques in mathematics classrooms patterned after proven techniques used in Reading classes. The study attempts to generate a working model that allows for appropriate diff...See More

Anyone Here Ever Use ModuMath?

by MacQ

Mar 5, 2013

Your opinions would be appreciated. Thanks!

Using the textbook

by Point taken

Mar 16, 2013

How much do you depend on a textbook for designing lessons?

Rich/CA/Math On 3/16/13, Point taken wrote: > How much do you depend on a textbook for designing lessons?

Personally I don't use the textbook at all. I do not use it for teaching nor do I use it for homework. In my experience, texts are usually written at a level that is inappropriate to the reading and cognitive levels of students. And they usually...See More

Mar 16, 2013

Euler's Identity

by Mrbdawg

Mar 17, 2013

I like showing students e^i(pi) + 1 = 0, and it seems years ago i found a nice proof of this that didnt use calculus and was easily accessible for trig if not alg2 students.

Any ideas?

Mohan Pawar On 3/17/13, Mrbdawg wrote: > I like showing students e^i(pi) + 1 = 0, and it seems years > ago i found a nice proof of this that didnt use calculus > and was easily accessible for trig if not alg2 students. > > Any ideas?

Are your students familiar with formulas for exponential series e^x and trig series sin x and cos x? If ...See More

Mar 17, 2013

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