And just in case you're going to a party or a gathering, here's a stumper to try on your guests! Let's say that there are 20 or 30 people at your party/gathering. I'm sure they'll all be shaking hands. So......how many handshakes will occur? Careful, this question might just be a bit trickier than you think!

A little algebra practice goes a long way. These worksheets on linear functions with answers on the second page provide you with great practice!

You might also like:

• Positive Slope Tutorial
• Negaive Slope Tutorial
• Undefined Slope Tutorial

Mental math refers to the ability to think mathematically. It's the process your mind goes through when you try to work out a math problem without a calculator, pencil and paper. Doing a few mental math activities each day will help strengthen math skills. Try some of the resources here for some great mental math activities. Not only that, your children will keep learning all through the holidays.

One of my all time personal favorites that has people thinking you're a magic mathematician is The Secrets of Mental Math This book reveals the many secrets of rapid mental calculation, you'll have your learners in awe of your ability!

I hope all of our readers have a wonderful holiday. For those celebrating Christmas, a Merry Christmas to you. Thank you to all for being loyal readers, I wish you and your families the very best.