Impact of a Tier 2 Fractions Intervention on Fifth-Grade Students’ Fractions Achievement - A Technical Report

Oct 15, 2026

Uploaded by Damian

A technical report evaluates the impact of a Tier 2 fractions intervention on fifth-grade students’ fractions achievement. It documents study implementation funded by the National Science Foundation and provides a structured study design covering core instruction, the fractions intervention condition, comparison condition, tutor training, measures, fidelity of implementation, and data analysis plans. Results summarize descriptive data, posttest and assessment effects, sensitivity analyses, and classroom observation findings, including correlations and classroom organization.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages95

Reading Time3 h 59 min

AccessFree to download

Executive Summary

Introduction

Method

Setting and Participants

Study Design

Training of Tutors

Measures

Fidelity of Implementation

Data Analysis

Results

Impact of the Fractions Intervention on Student Fractions Achievement

CLASS Observations of Tutoring Groups

Impact of a Tier 2 Fractions Intervention on Fifth-Grade Students’ Fractions Achievement: A Technical Report 2018 Madhavi Jayanthi Russell Gersten Samantha Spallone Joseph Dimino Robin Schumacher Keith Smolkowski Instructional Research Group Karen Karp Johns Hopkins Kelly Haymond Instructional Research Group This project was funded by the National Science Foundation (Grant No. DRL-1535214) . Copyright © 2018 Instructional Research Group. Not for reproduction, distribution, or use without permission from Instructional Research Group. Preferred citation is: Jayanthi, M. , Gersten, R. , Spallone, S. , Dimino, J. , Schumacher, R. , Smolkowski, K. , Karp , K. , & Haymond, K. (2018) . Impact of a tier 2 fractions intervention on fifth-grade students’ fractions achievement: A technical report. Los Alamitos, CA: Instructional Research Group. To download a copy of this document, [visit](visit www.inresg.org)[ ](visit www.inresg.org)[www.inresg.org](visit www.inresg.org). Author Note The authors would like to thank Drew Bailey and Francis (Skip) Fennell for their fresh perspectives and counsel throughout the implementation of the study. In addition, the authors would like to thank Pamela Foremski and Christopher Tran for assisting with the research and preparation of the report. Table of Contents 1. Executive Summary ................................................................................................... 7 2. Introduction ................................................................................................................ 8 3. Method ..................................................................................................................... 10 3.1 Setting and Participants ................................................................................... 10 Student sample ................................................................................................ 10 Screening criteria........................................................................................ 12 Sample attrition........................................................................................... 13 Tutor sample .................................................................................................... 14 3.2 Study Design ................................................................................................... 15 Core classroom mathematics instruction ......................................................... 15 Fractions intervention condition ....................................................................... 16 Scope of the fractions content in the intervention ....................................... 18 Use of concrete and semi-abstract visual representations ......................... 20 Refinements based on the pilot study......................................................... 20 Comparison condition ...................................................................................... 20 3.3 Training of Tutors ............................................................................................. 21 Ongoing support and feedback to tutors .......................................................... 21 3.4 Measures ......................................................................................................... 22 Student measures............................................................................................ 22 Observations of tutoring groups ....................................................................... 26 Surveys ............................................................................................................ 29 Classroom teacher survey of instructional practices................................... 29 Student, tutor, and classroom teacher appraisal surveys ........................... 29 3.5 Fidelity of Implementation ............................................

FAQs

What is the main focus of this technical report?

The report examines how a Tier 2 fractions intervention affects fifth-grade students’ fractions achievement.

How is the intervention study structured?

The method section covers setting and participants, study design (intervention and comparison conditions), tutor training, measures, implementation fidelity, and planned data analyses.

What types of results are presented?

Results include impacts on posttests and performance assessments, sensitivity analyses, quality of explanations, and CLASS observation findings such as tutoring group ratings and related student outcomes.

Oct 15, 2026

Uploaded by Damian