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Math Teachers Chatboard

Logic and the Core Standards

by Julia

Feb 3, 2013

I have been working on my web site to provide teachers a definitive free resource for the core curriculum for a while now. Many teachers are asking me to create Logic worksheets. I align all of my sheets to the Core Math Curriculum, to make it easier for teachers. I see no logic skills any where in the core.

Does anyone know where logic c...See More

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Statistics

by Taimur Murad

Feb 12, 2013

I need help with statistics i am a student

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Tricia Try Khan Academy!

On 2/12/13, Taimur Murad wrote: > I need help with statistics i am a student

Feb 14, 2013

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nth roots and rational exponents

by Amanda

Feb 20, 2013

I understand how the 4th root of 81 yields a positive and negative answer. When asked to evaluate 16^(3/4) why is there no negative answer? Thanks!

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Mohan Pawar On 2/20/13, Amanda wrote: > I understand how the 4th root of 81 yields a positive and > negative answer. When asked to evaluate 16^(3/4) why is > there no negative answer? Thanks!

Definition of a^(1/n) is the answer ------------------------------------ x=a^(1/n) is called as principle n^th real root of a and such root when it exis...See More

Feb 22, 2013

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Mohan Pawar On 2/22/13, Mohan Pawar wrote: > On 2/20/13, Amanda wrote: >> I understand how the 4th root of 81 yields a positive and >> negative answer. When asked to evaluate 16^(3/4) why is >> there no negative answer? Thanks! > > Definition of a^(1/n) is the answer > ------------------------------------ > x=a^(1/n) is called ...See More

Feb 22, 2013

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Quadratics

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?

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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

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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

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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

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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

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Geometric Puzzle

by PedagoNet

Mar 2, 2013

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

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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?

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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

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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

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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

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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

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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

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