The Math Teachers at Play Carnival 50 is now live at Mathematics for Teaching. Due to busyness, the Math and Multimedia Blog Carnival will have a break this month — unless someone volunteers to host it before the end of the month.

I have updated the following GeoGebra Tutorials to version 4.0: Spreadsheet, Slider, and Curves of Best Fit (Tutorial 20) ; and Spreadsheet and Similarity (Tutorial 21); Spreadsheet, Vectors and Matrices (Tutorial 22). Continue reading