Activity
University of Cambridge

University of Cambridge: Nrich: Gnomon 1

For Students 3rd - 8th Standards
This interactive activity gives you an opportunity to explore a specific number pattern named the "Fibonacci sequence." See what other patterns you can discover while you manipulate the blocks. There is a "Printable Page" link if you...
Interactive
Other

Sudoku Puzzles

For Students 9th - 10th
This site offers many uses for Sudoku, including free online puzzles, free puzzles for school publication, and it gives the history of Sudoku.
Lesson Plan
Better Lesson

Better Lesson: Power to the 10! Conversions With the Metric System

For Teachers 6th Standards
Sixth graders will be using ratio tables to convert units of metric measurements and looking for patterns to help make the problems easier.