Ginny Bartolone began writing DIY and home improvement guides nearly 10 years ago, covering everything from energy-efficient appliances to cracked foundations. Whether she's compiling cost information ...

Adding single digit numbers can sometimes make double digit numbers. A handy way to make this easier, is by making 10 first. This diagram shows the connection between the numbers that form number ...

For most of human history, doing arithmetic, while sometimes aided by devices like the abacus or adders, was fundamentally an act of human intelligence. In the 17th and 18th century, a few natural ...

Picture a bridge made of Legos. One side has three support pieces, the other two. How would you stabilize the bridge? Most people would add a piece so that there are three supports on each side, a new ...