How to Insert Equation Numbers in Word 2010. In most cases, I’m using LaTEX to typeset my math docs but when I am in a hurry or I’m having my students write up reports, I need to use Word. Here’s a quick demo for adding equation numbers in word that auto-number and can be referenced in the text.
I just posted a new video to the Trigonometry Lecture Series. This is the 11th in the series.
In this video, I cover how to identify properties of sine and cosine graphs, determine the amplitude and period of sinusoidal functions, graph the sinusoidal functions using key points, and find an equation for a sinusoidal graph.
(Submitted as an essay in the MOOC – “History and Future of (Mostly) Higher Education” on Coursera)
For the first several years teaching in the undergraduate mathematics classroom, I was convinced that the better my lecture, the better the learning that took place in my Math classes. I was extremely enthusiastic of my presentation of factoring polynomial or row-reducing large matrices, and almost any other math topic you can conceive. I worked hard to provide visually stimulating examples and always received high marks on my student evaluations. And yet, there was no significant difference between those topics in which I was well-prepared and those topics that had less-than-exceptional presentations. Eventually I had to admit and, yes, unlearn that there was any significant connection between my lecture style and my student’s mastery of the concepts. In its place, I learned that a reasonably well presented topic coupled with a great deal of hands-on group work, facilitated by peer instruction/collaboration DID make a significant impact on their demonstrated mastery. Continue reading
I’ve just completed creating a new YouTube channel (SplineGuyMath) specifically to house the videos I created for my online courses. As early as 2007, I began creating a series of lecture videos for Intermediate and College Algebra. As part of an agreement with Wayland Baptist University, those videos were incorporated into their online math curriculum and are still the centerpiece of the online courses that we offer in those areas. Those videos belong to the University so you’ll have to look into taking online courses with Wayland to see those…
Taking the same approach, I began developing videos for other courses, from Trigonometry to Numerical Analysis to Differential Equations, and many other topics as the need arose. For the ones I own the rights to, I’ve decided to just throw them out there for anyone that might be interested. A quality online college level course is MUCH more than just the content or lectures that might accompany it, it is the guidance and personal instruction provided by the teacher. Plus, for a math course, it requires you to actually “do the math,” not just watch it be “performed.”
So, I’m giving away my video content to anyone who wants it. I just hope it’s useful to someone. You can find my channel here: http://www.youtube.com/splineguymath
Below is the first lecture series that will be going up. Trigonometry! There are some “fill-in-the-blank” style notes that go along with it, if you’re interested. You can order these from Lulu.com here:
Trigonometry: Lecture Notes (Spiral Bound)
Trigonometry: Lecture Notes (ebook)
I’ll keep you posted here with any new series or videos that go up. Subscribe if you’re interested!
I spent (wasted?) several hours working this problem out years ago but saw it posted recently on Google Plus. I soon realized that either my solution predated my blog or I never actually posted my solution.
Here’s the problem and my solution is below: (ref: http://thinkzone.wlonk.com/MathFun/Triangle.htm)
Using only elementary geometry, determine angle x. Provide a step-by-step proof.
You may use only elementary geometry, such as the fact that the angles of a triangle add up to 180 degrees and the basic congruent triangle rules (side-angle-side, etc.). You may not use trigonometry, such as sines and cosines, the law of sines, the law of cosines, etc.
Spoiler Alert: Don’t read any further if you want to give this a shot yourself!
I have the great privilege of being able to gather with some 60 K-12 educators and lead them in a workshop to learn how to incorporate technology into their classroom.
At the Region 17 Education Service Center in Lubbock on Friday, February 8, 2013, I am leading a technology workshop entitled, “Teaching in the One iPad Classroom”.
Here’s what we hope to be covering: (from the abstract on their website)
In this workshop, attendees will be introduced to strategies for using the iPad to teach in the modern classroom. Software tools and apps will be presented that allow wireless mirroring of an iPad through the projector in the classroom as well as remote control of your desktop computer while teaching. Additionally, a range of apps will be presented that offer a basis for interactivity in the classroom and a powerfully visual presentation of concepts.
Much of the content for this has been taken from the Teacher Quality Grant for which I am the lead instructor. As part of the Teacher Quality Grant (2012-13), high school and junior high algebra teachers have learned how to integrate the iPad into their curriculum and even use it to develop their own curriculum elements.
Here is the handout that is being made available as part of the workshop: Workshop Handouts
BBWorld 2012 – New Orleans, LA, a set on Flickr.
This week, I’m attending the BBWorld conference in New Orleans and I can’t pass up a chance to take my camera out for a spin in the Big Easy.
The Fourth in Plainview – 2012, a set on Flickr.
I put my new Nikon D3100 to the test and shot the fireworks show for the Fourth in Plainview. I think they turned out fantastic. Not bad for an noob.
The elementary school where my boys attend is hosting a fund raising contest where students bring their change to donate. Instead of accumulating donations to win for their own grade, they are putting their change in other grades canisters. The grade with the lowest weight in donated change at the end of the fund-raising wins. Pretty innovative, I think. The kids seem motivated, so fortunately for the school they are not colluding to all bring nothing which would keep their weights down. Instead they are piling in the change especially those with siblings in other grades.
Strolling through the halls, I overheard a conversation where teachers were wondering if anyone had found out which coins weighs the most so they could give more of those. Of course, that got me thinking. The obvious answer would be that the larger coins like the half-dollar or presidential dollar would be the heaviest.
Although, don’t you really want to have the most weight for your money? Sure, I could put in 10 presidential dollar coins, but which would weigh more, 10 dollars in half dollars, 10 dollars in quarters, or 10 dollars in dimes?
So, of course, I had to know the answer. Checking out the U.S. Mint, I learned the following weights for each of the coins:
1 penny = 2.5 g which means $1 in pennies is 250 g.
1 nickel = 5 g which means $1 in nickels is 100 g.
1 dime = 2.268 g which means $1 in dimes is 22.68 g.
1 quarter = 5.670 g which means $1 in quarters is 22.68 g.
1 half-dollar = 11.340 g which means $1 in half-dollars is 22.68 g.
1 dollar (coin) = 8.1 g which means $1 in a single coin is 8.1 g.
In spite of the larger weights for the larger coins, you are still much better off dumping in those pennies. I did learn a pretty interesting fact though: A dollar in dimes weighs the same as a dollar in quarters which also weighs the same as a dollar in half-dollars. Pretty cool!