# Super-Sticky Sandwich

Here's your nightly math! Just 5 quick minutes of number fun for kids and parents at home. Read a cool fun fact, followed by math riddles at different levels so everyone can jump in. Your kids will love you for it.

# Super-Sticky Sandwich

May 27, 2017

The most popular sandwich in America might be the peanut butter and jelly. We’ve been making these sandwiches for over 100 years — the first known recipe is from the year 1896! It’s kind of silly that you’d need a recipe for spreading peanut butter on bread, but back in the day it was trickier than that: people had to make their own peanut butter at home. Another recipe from 1901 adds jelly to the mix. Then in 1928 sliced bread was invented, and then we knew everything we needed to know to make this easy sandwich. Today the average kid eats 1,500 PB&J sandwiches before graduating from high school — so that’s some pretty sticky math.

Wee ones: If you put a piece of bread on the plate, then top it with peanut butter, then jelly, then another slice of bread, how many layers do you have?

Little kids: If you make a mega-PB&J sandwich layering bread, then PB, then jelly, then bread again to repeat, what ingredient is the 6th layer?  Bonus: Which layer of the sandwich is the 3rd layer of peanut butter?

Big kids: If the peanut butter sandwich came to life in 1896 and the jelly came along in 1901, how many years later was that?  Bonus: If you eat 200 PB&J sandwiches each year, and you eat 1,600 by the time you graduate at age 17, how old were you when you started?