Cut an apple in half and you get 1/2 and 1/2 of an apple. Look at a gas pump price and see a fraction of a dollar as the price per gallon. Look at the moon and calculate what fraction of the moon is showing at night. Use a ruler and determine what fraction of an inch is the length of something plus the number of whole inches.
Recipes!
The question presumes that math classes are not part of the real world, which is debatable. The GCF can be used to simplify fractions. Carpenters and chefs use fractions in practical, non-academic settings.
fractions are used in the English system of mesurement (inches, feet, pounds, etc.)
chinese
1/2
fractions are used in almost everything we do
We can use fractions to name a lot of things. Ok, in the world of Math, it's trivial, it is used to name it's value. So what about the real world? You can discuss half or a pie you just ate, you just ate 1/2 of a pie. I broke my pencil in exactly 4 piece identical in length, I have 4 pieces of 1/4 of a pencil. etc.
Number factors help find common denominators in fractions and reducing fractions. In algebra they are used to find the answers to higher level equations like quadratics.
a cube because its used in the real world plus its not a polygon
Lessons and training for policemen are not nearly as dangerous as they will be in the real world, with real criminals and real weapons being used indiscriminately and obviously in real life much less controlled situations.
there are fractions in whole steps
E means Electronic in this real world of technology