University of Cambridge
University of Cambridge: Nrich: Transformation Tease
Follow the directions at this one page website. You will get lots of practice plotting points on the coordinate grid and experience with transformational geometry.
Khan Academy
Khan Academy: Distance Between Points in First Quadrant
Graph and find the distance between point in first quadrant of coordinate plane. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Other
Math4children.com: Math Worksheets for Middle School
Download these math worksheets to assist you in the concept you are covering in your middle school math classroom. Content includes pre-algebra and algebraic equations, decimals, fractions, geometry, graphs and coordinates and...