The Odds of a Tasty Lunch: CCSS.Math.Content.7.SP.C.8.b

sandwich

Many students know how a good lunch can help to turn a bad day around, or make a good day even better. Perhaps the most common part of any lunch is the sandwich, and there are so many different sandwiches you can make. You can put it on a bagel or a baguette, with roast beef or ham, Swiss or cheddar cheese, tomatoes or lettuce, peanut butter or mayo, or whatever combination you might like. Fortunately, there is an easy way to explore your options: MATH. You might be thinking, “Why would I use math to make a sandwich?” If you use a probability tree, you can sketch out the different sandwiches you can make with particular breads, meats, and vegetables. If you can use math to help you make a decision like that, maybe you should be asking, “Why NOT?”

CCSS.Math.Content.7.SP.C.8.b
Represent sample spaces for compound events using methods such as organized lists, tables and tree diagrams. For an event described in everyday language (e.g., “rolling double sixes”), identify the outcomes in the sample space which compose the event.