The Harvard Graduate School of Education has assembled over 300 "innovative mathematics assessment tasks," and they can be viewed for free at this site. The tasks present the student with a scenario and ask a series of questions based on the information provided. They are separated into five different grade levels from kindergarten to twelfth grade, with one additional category for...

This website features a variety of projects and products produced by the Centre for Innovation in Mathematics Teaching (CIMT) at the University of Exeter. For example, the Mathematics Enhancement Program is an ongoing project to develop and trial a new mathematics course with primary schools in the United Kingdom. Results from diagnostic tests are posted online along with the instructional units...

Flavius Josephus was a Jewish historian living in the first century when he and his comrades found themselves trapped in a cave. Surrounded by Roman centurions, this band chose suicide over capture, and they elected to form a circle and then start killing themselves. From this rather traumatic situation came the well-known Josephus Problem, a classic problem of recreational mathematics. This...

The Mathematical Association of America has developed the Innovative Teaching Exchange in order to facilitate the exchange of interesting and compelling teaching resources from a wide range of educators. As their site indicates, "The intention is to encourage more experimentation with more methods than the traditional lecture/questions method." Currently, there are about a dozen articles available...