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SUDDS 6th-Grade Statistics Unit

Team News
We developed this statistics unit for our design study with our partner school district in Freehold Township, NJ. It aligns with two clusters in Math-Mapper, Displaying Univariate Data and Measuring Data with Statistics. We would love to hear teachers' feedback on how this unit worked in their classrooms! View the materials
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SUDDS Ratio Study: Takeaways for Teachers

Articles
As a follow-up to our design study of a sixth-grade ratio unit at Highland Middle School in Harnett County, NC, we analyzed student responses to several assessments that teachers administered over the course of the unit. The assessments included: A pretest administered before the beginning work on the SUDDS ratio curriculum that included items from cluster 4, Finding Key Ratio Relationships, and cluster 5, Comparing Ratios and Finding Missing Values. A Cluster Assessment of Progress (CAP) was administered for cluster 4 after completing the cluster 4 curriculum. A CAP was administered for cluster 5 after completing the cluster 5 curriculum. A SUDDS-designed posttest containing items from both cluster 4 and cluster 5 was administered after completing and reviewing the cluster 5 curriculum. An independent assessment containing ratio items, was administered…
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Our Dynamic Number Line Tool is Now Available to All!

Team News
Teachers and students can now access our dynamic number line tool for free. The tool is a great way for students to explore fractional reasoning, integer operations, irrationals, the development of the real number system, and more. We suggest students and teachers first work through our set of example assessment items (and share your thoughts through the feedback form at the bottom of the page) before going further with the blank slate version. Let us know what you think!
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SUDDS Conducts Design Study with Partners at Highland Middle School

Team News
In November, the SUDDS learning science team worked with teachers and sixth grade students at Highland Middle School in Harnett County, NC to conduct a design study on sixth grade ratio topics. The goal of the study was to better understand how teachers use Math Mapper to guide their instruction and how students use Math Mapper to guide their learning. With a shared curriculum in use across teachers, the differences and commonalities in how teachers and students respond to and use the data could be examined. Thus, Dr. Confrey and her team wrote a curriculum targeting the development of a conceptual understanding of ratio. This ratio curriculum was built upon empirically supported learning trajectories that describe the benchmarks and strategies exhibited by students as their understanding of a concept increases…
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We’ve Moved!

Team News
After two highly productive years at Venture Center on Centennial Campus, the SUDDS team has moved to new offices. We will welcome 2017 in our new space at 407 Gorman St., Floor 2, Raleigh, NC, 27607. We’ll miss our old space, but we’re excited to be right around the corner from Sushi Tsune and down the road from our College of Education colleagues in Poe Hall.
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SUDDS Welcomes Advisory Board Members for Annual Meeting

Team News
On December 14th and 15th, the advisory board members for the NSF DRK12 project joined the SUDDS team in their Raleigh offices. A month before the meeting, the board chair, Dan Heck, who is the Vice President of Horizon Research, met with the team to identify three main themes to discuss with the board: Psychometric Models and Learning Trajectories Teachers’ and Students’ Early Experiences with Math Mapper Planning and Conducting Research in a Complex System The board, which consists of experts with a broad range of perspectives, includes: Brian Gong, Senior Associate at the National Center for the Improvement of Educational Assessment; Brian Graham, Principal at SUDDS partner school Highland Middle School in Harnett County, NC; Charlene Marchese, Supervisor of Mathematics at SUDDS partner district Freehold Township Schools in Freehold,…
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We Are Hiring! Front End Software Engineer

Team News
We are currently seeking candidates for a temporary front end software engineer position. The Software Engineer/Programmer is a key role in the Confrey Research Group, serving as an experienced developer who can work effectively on front-end development. S/He will build the overall system prototype including revisions. Read full description.
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Middle Grades Students’ Interpretations Of Addition Of Fractions Using An Interactive Number Line

Presentations
Meetal Shah, our research assistant, presented at the NCSU Graduate Student Research Symposium on March 23. The presentation summarized Meetal’s study that investigated how middle grades students solved problems that involved the addition and subtraction of fractional magnitudes using an interactive number line (NL) and coordinated the context and the features of the digital tool in doing so. See a PDF of the poster presentation. [embed]https://www.youtube.com/embed/32n2Xv6eeyA[/embed]
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