Place Value

(MathPickle, 2011)

Some number systems use place value – others do not. This video takes you on a tour of number systems including Egyptian, Arabic, Babylonian, Montessori and Scientific Notation. Ron Goodman has edited the video for younger students (see below.) Thank you Ron!

PS. The serious student should research India and the origin of the “Arabic” number system. I really should have emphasized India’s central role in the development of place value instead of just saying that Al Khwarizmi helped its spread. Thank you India!!!

[Mathematics is] to be recommended as a preventative against frivolous reading and a premature development of the imagination. F. J. Grund

Introductory Discourse and Lectures, Boston, 1830

Standards for Mathematical Practice

MathPickle puzzle and game designs engage a wide spectrum of student abilities while targeting the following Standards for Mathematical Practice:

MP1 Toughen up!

This is problem solving where our students develop grit and resiliency in the face of nasty, thorny problems. It is the most sought after skill for our students.

MP3 Work together!

This is collaborative problem solving in which students discuss their strategies to solve a problem and identify missteps in a failed solution. MathPickle recommends pairing up students for all its puzzles.

MP6 Be precise!

This is where our students learn to communicate using precise terminology. MathPickle encourages students not only to use the precise terms of others, but to invent and rigorously define their own terms.

MP7 Be observant!

One of the things that the human brain does very well is identify pattern. We sometimes do this too well and identify patterns that don't really exist.


Please use MathPickle in your classrooms. If you have improvements to make, please contact us. We'll give you credit 😉

Gordon Hamilton

(MMath, PhD)


Lora Saarnio