Car Caravan
by Dan Meyer
skips
questions
Act One
 1.
What's a number you know is too high?
 2.
What's a number you know is too low?
Act Two
 3.
What information would be useful here?
 ImageA sample toy car for estimation
 ImageThe diameter of the spiral
 ImageThe price of one car
Act Three
 ImageAnswer
Sequel
 4.
What was the percent error of your answer?
 5.
How would your estimates have to change to get a more accurate answer?
 6.
It is estimated that 10,000 different Hot Wheels have been produced since 1967. How large of a circle would it take to fit all those cars?
 7.
Take a long string. Draw a circle in chalk outside with that string as the radius. Estimate the cars that'd fit inside. Then calculate it.
show 74 more questions









How many less cars are there in each subsequent ring? And is what I just wrote a sentence?





















Are those matchbox cars? Does the amount per concentric circle increase in a predictable proportion as you radiate out?




















How many cars? What are the different ways to solve this? I love this picture.













How many cars are there? How much space do the cars take up on the floor?











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