Know your numbers

Do you know your numbers?

Do you just “get” numbers? Or have they always left you a little baffled? Now you can test this observation and quantify your number sense.

Number sense is our “gut knowledge” of numbers’ magnitude, their relationships, and even basic arithmetic. Number sense is thought to be innate, potently present as early as infancy. But while we all have it, we are not made equal. Individuals vary in the accuracy of their number sense. In other words, some people are better at guessing than others. Scientists think that such differences could relate to an individual’s mathematical aptitude.

To explore this further, researchers at John Hopkins University developed a number discrimination test, available for free online. The 10 minute test is straightforward. Yellow and blue dots flash onto a screen and you have to guess if there were more yellow or blue dots. After, the program provides a report of your performance and a comparison to others in your demographic.

Already researchers around the world have used this tool to explore different aspects of and factors relating to number sense. The John Hopkins developers have also created a package for educators that includes instructions for administering the test and guides for data analysis.

Curious to learn more? Test yourself!

Photo: USAF

Categories: Education

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About the Author

Carolyn Graybeal

Carolyn Graybeal

Dr. Carolyn Graybeal holds a PhD in neuroscience from Brown University. She is a former National Academies of Science Christine Mirzayan Science & Technology Policy Fellow during which time she worked with the Marian Koshland Science Museum. In addition the intricacies of the human brain, she is interested in the influence of education and mass media in society's understanding of science.