This site is designed to illuminate the vision for school mathematics described in NCTM's Principles and Standards for School Mathematics. The examples contained within it span the entire K-12 range. This resource includes:

• i-Maths: online, interactive, multimedia math investigations. All i-Maths are built around interactive math applets, and some also include video clips.
• Internet-Based Lesson Plans showing how the Internet can be used to help create effective Standards-based mathematics lessons.
• Math-lets: math applets you can download and use to explore math and create interactive lessons on your own.
• Inquiry on Practice: video vignettes, research reports, and articles designed to encourage thinking and discussion about how to improve the teaching and learning.