Potato Chips That Rock ‘n Roll

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.

Potato Chips That Rock ‘n Roll

October 2, 2019

Potato chips are crispy slices of salty yumminess. But it turns out you can build with them, too. Someone figured out that you can stack Pringles potato chips to make them stand in a full circle! As we see in this video clip, it takes a few tries to make it work. But Pringles are all the same shape — a hyperbolic paraboloid, if you want the exact math name — and every can holds about 100 chips. So you have plenty of chips for stacking — but you’d better eat fast before they roll away!

Wee ones: These chips are stacked in a circle.  Find 3 circle-shaped things in your room.

Little kids: If you stack 4 chips, then eat 2 of those, then stack on 3 more, then eat 2 more, how many chips are left in your stack?  Bonus: If a whole circle of 80 chips rolls off the table and you pick them up in handfuls of 10, what numbers do you say to count them?

Big kids: If you add a chip on the left side, then the right, then the middle, then left again to repeat, where do you stack the 29th chip?  Bonus: If every can of Pringles has 100 chips, after those 29 how many are left to stack?