Mary Dooms sent a comment to this blog in response to my July 4th post on GeoGebra Central – Applets for Grades 6 – 12:

As an fyi: I have been gathering GeoGebra applets that support the sixth grade common core at: http://grade6geometry.wikispaces.com/. The site includes learning targets, examples of levels of mastery, and other resources. Additionally, it links to a ratios and proportions wiki (a work in progress, but live). As the year progresses I intend to roll out other units of study. |

I checked out the Grade 6 Geometry wiki and there were some wonderful activities that each include an interactive GeoGebra applet and a pdf for the students. I especially liked the derivation of the formula for the area of a trapezoid. I haven’t yet gone through them all, but the ones that I did try involve the students in discovery activities.

She also has a wiki on Grade 6 Ratios and Proportions, which is still under construction. In the problems posted, she uses the “Dan Meyer” method of presenting a problem via a video. The problems are engaging and force students to use the Standards for Mathematical Practice, particularly # 1: Make sense of problems and persevere in solving them, # 2: Reason abstractly and quantitatively, and #4: Model with mathematics.

Thanks, Mary, for sharing!