Month:

Could 1% of a World Cup crowd actually fit on this field?

  • May 1

Students consider the question of just how many people would fit on the soccer field on which their team is playing a match. It's an estimation question and highlights on just how easy it is to come up with a good estimate on the fly if you need to. Read about the evolution of this video, which was developed in partnership with a middle school math teacher and his students, in this... CONTINUE READING

What is the Really Big Number Here?

  • September 9

Dr. Glen Whitney, founder of the National Museum of Mathematics in New York and walkSTEM advisor, has fun with a really big number by estimating the number of stones that were used to build the sidewalk on Flora street. Using number arrays, estimation, and collaborative groupwork, Dr Whitney and friends come up with their estimate and then visualize how tall of a tower these stones would be if they were to be stacked up vertically. Can you guess? Supplementary Activity Guides for this video to e... CONTINUE READING