While for most uses people use 3.14 to calculate circumference or diameter of a circle, people have also calculated pito a million and trillion decimal places.
Many Americans let distaste for Mathematics fester from grade school or even through high school; we can hardly live without it. Math can prove a harsh mistress as those many bank overdraft charges show; nevertheless with it, engineers and architects and programmers design our modern world.
Parents if you feel intimidated by your child's math homework, learn alongside them. Old dogs can learn new concepts. Teach your children well.
Celebrate mathematics! Start today especially as it marks Super Pi Day: 3-14-15.