Other includes studies with findings that do not align to any evidence tier, studies with findings only aligned to Tier 4, and some studies with findings aligned to Tier 3. Studies that were reviewed under version 1.0 or 2.0 WWC Standards will be categorized as Other, even though the findings may meet the criteria for Tier 3. In addition, studies that Do Not Meet WWC Group Design Standards will be included in the Other category because the findings from these studies are not reviewed for evidence tier alignment.
Related Resources for Developing Effective Fractions Instruction for Kindergarten Through 8th Grade Practice Guide
Related Resources
Reference
Developing Effective Fractions Instruction for Kindergarten Through 8th Grade
July 1, 2021
These tips are supported by research evidence that meets What Works Clearinghouse design standards and are based on a practice guide authored by a panel of experts: Robert Siegler, Thomas Carpenter, Frances (Skip) Fennell, David Geary, James Lewis, Yukari Okamoto, Laurie Thompson, and Jonathan Wray. To learn more about this evidence base, read the practice guide, Developing Effective Fractions Instruction for Kindergarten Through 8th Grade (https://ies.ed.gov/ncee/wwc/practiceguide/15).
Video
Developing Effective Fractions Instruction for Kindergarten Through 8th Grade-- Pt. 6
April 11, 2017
Play an interview of Panel Chair, Robert S. Siegler: The Importance of Fractions Instruction (5:36 minutes)