Hot Math How-Tos

How To: Start using Computer Aided Design (CAD)

In this CNC Basics Video we go over CAD. CAD Stands for Computer Aided Design. During the CAD step we take our initial design and translate it into the computer. We do this CNC Step so we can change the design, resize it, save it, transfer it to someone else, etc. So check out this beginners tutorial on how to use CAD.

How To: Compute mathematical problems in your head

This educational video tutorial will show you how to compute mathematical problems in your head. You will see some techniques to do some maths problems in your mind. Learn to do algebraic computations in the head without having to look at a calculator. Become a human calculator!

How To: Solve a ten digit number math problem

Check out this video tutorial on how to Solve a ten digit number math problem. This video will show you the key to solving the puzzle to find a 10 digit number, such that 10 digits are divisible by 10, and the first 9 are divisible by 9, and so on.

How To: Learn about types of numbers

Learn about all the different types of numbers, like integers, irrational numbers, and real numbers, in great detail. Also includes how to use a number line, a dichotomist tool, and other methods of number manipulation.

How To: Do metric conversions in pre-algebra

Lawrence Perez, from Saddleback College, and his assistant Charlie, give this pre-algebra three-part lesson on metric conversions. Why can't we all use the same system of measurement, who knows? But until we see this day, you'll need to know how to do this.

How To: Subtract numbers on an abacus calculator

Lawrence Perez, from Saddleback College, and his assistant Charlie, give this two-part arithmetic lesson on subtracting with an abacus. Could this be any easier than adding? Maybe, can you "borrow" the knowledge to subtract these numbers without an electric calculator? See for yourself.