How many gumballs are there?

2023-11-20 09:44:48

How many gumballs are there?

Gumball Machine Problem from Brian Marks on Vimeo

This problem is a little puzzle to get your students thinking, estimating, and calculating. We've given you a pdf file with only a picture of the gumball machine to use for estimating.
  • How many gumballs are there?
  • At $0.25 per ball, how much will it cost me to buy them all?
  • How long will buying them all take?


For Adventurer members we have our thoughts on how a student might estimate or calculate this quantity.

Activity Solutions & Supporting Materials
Share this:
Comments (0)
    Display 1 - 10 Of total 0
    John Urschel, retired Baltimore Raven and Black mathematician
    John Urschel is a young man with several seeming...
    California wildfire
    Wildfires are burning in the Sierra Nevada M...
    Home team advantage?
    Updated! Even before your students check out th...
    Mixing colors with food dye
    It's time to dye eggs! ...
    String design, ellipses, and orbital mechanics
    Here's a different and somewha...
    AQI - Air Quality Index
    The AQI is a measurement of how much particulate...
    Fantastic Beasts - What did it cost to make?
    In 2001, J.K.Rowling (the author of the Harry ...
    Chicken to share
    How many pieces does each person get when $10 is...
    Is this possible?
    Brian Shoemaker, a Newton, MA mathematic...