Sorry for the downtime yesterday--still looking into what caused it. In the mean time, Calcblog is back up and running 100%!

New post: learn which calculators are and aren't allowed on the SAT and ACT and what you need to do to prepare at bit.ly/PaeYxa

For a limited time, Ace the SAT is an extra 5% off on Amazon! Get it at amzn.to/vJEYN4

Merry Christmas, all!

New post out to ring in the new year! Learn how to graph equations in polar coordinates using your calculator: bit.ly/10VpP6i

How to enter logarithms of different bases on your calculator: bit.ly/X3deOe

Check out our latest post--an introduction to the HP 50g and using RPN: bit.ly/ZBeCsX

Looking for an update to your broken TI-83? Check out the TI-84 Plus C, now with a color screen: bit.ly/107NH5q

Today is #NationalTeacherAppreciation Day! RT if a teacher has made a difference in your life. ow.ly/i/23ASc

We just posted a new video tutorial: Using Variables on your TI Graphing Calculator: youtu.be/v2oaxLqW8bw

We are experiencing some server trouble. Calcblog should be mostly usable, and we are working on getting everything back to normal. :-)

Everything at Calcblog should be back to normal now--thanks for your patience!

If you haven't seen it yet, watch our new (short) video tutorial on variables on your graphing calculator: youtu.be/v2oaxLqW8bw

Graduation season is wrapping around again. Congratulations to all the recent and soon college and high school graduates!

Customize your learning with three new TI-84 Plus C graphing calculator applications: bit.ly/129B7zx

Working on getting Calcblog Apps up--you can check it out so far here: calcblog.com/software/

Happy 4th of July to all our American followers!

Calcblog: 30% off any book at Amazon with code BOOKDEAL. Pick up Ace the SAT or another great book at amzn.to/vJEYN4

Merry Christmas from Calcblog!!

First post of 2014: "Plotting Parametric Equations on the TI-83+ and TI-84+" at bit.ly/1hpitAt. Hope you find it useful!