## Place Value Worksheets

These are two worksheets that are sort of floating around in my online class right now.  My students seem to think they are helpful, so I am posting them here.http://www.math-aids.com/cgi/place_value_chart1.pl?x=137&y=22 http://www.mathgoodies.com/worksheets/pdf/unit12_pv_wks.pdf ...

## Least Common Multiple Example

There are two ways to find the LCM given in the textbook (Basic Mathematical Skills with Geometry, 8th Ed. by Baratto and Bergman) Let's look at example #4 on page 192 in a little more detail. One way of doing this problem would be the 'Listing Method'.  So, to find the LCM of 10 and 18, we could do the following: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, etc... 18, 36, 54, 72, 90, 108, 126, 144, 162, 180, etc... Note that 90 is the LCM, but 180 is also in common, it's just not the lowest number in common.  However, we could have already guessed that 180 is in common since 10 times 18 = 180. Let's look at the 'Prime Factorization Method' now. 10 = 2 x 5  and 18 = 2 x 3 x 3 We have to line up the factors vertically.  This means that a 2 can only be lined up over a 2,...

## Pricing Mistakes Challenge

I challenged my students this week to find pricing mistakes. For example, mistakes such as .11¢ instead of \$0.11 or 11¢.  I found two of my own this week.  Here they are: See the full gallery on Posterous ...

## Greetings from Ohio!

These are pictures and videos from a recent visit to African Safari Wildlife Park in Port Clinton, OH, and the nearby Cheese Haven.  Enjoy! See the full gallery on Posterous ...

## Five Quick Classroom Ideas

I'm not sure if I've been absolutely clear on this or not, but my lack of posting lately can be attributed to the fact that I'm now posting a majority of the links I find now on my Scoop.it page (http://bit.ly/mathnews).  Nevertheless, here are five quick ideas that just didn't fit in over there: 1.  Create a Magazine Cover (http://bighugelabs.com/magazine.php) -- In one of my Pre-Algebra courses last year I had students create a magazine about a chapter in the textbook.  This website would have helped the groups easily make a professional looking magazine cover for their project. 2.  Create Printable Posters (http://www.blockposters.com/) and (http://homokaasu.org/rasterbator/gallery.gas?937) -- In one of my Beginning Algebra courses last year I had students create math 'movie posters'.  Since I was working at a design school at the time, the students had the luxury of having access to industrial poster printers.  These websites would help in cases where students do not have access to those. 3....

## Greetings from California!

Some pictures and videos I took while I was in Sunny California!  =D See the full gallery on Posterous ...