Online Calculator: Desmos
Resources for the Conic Sections Activity:
UN-CONFERENCE RESOURCES: Free Math Stuff
The Daily Desmos: teacher-written graphing challenges
Geogebra: dynamic construction software. Download, or run in java.
Geogebratube: teacher-created demonstrations
SITES FOR PROMOTING INQUIRY –
Visual Patterns – Challenge your students to find and summarize patterns.
Graphing Stories – video starters, from linear to exponential
101qs – picture and video openers for promoting inquiry. Contribute your own!
Mathtwitterblogosphere – network of teachers dedicated to sharing resources and classroom experiences