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Version 1.1 – Updated August 2021

# Jigsaw method

## Overview

• Influence: Jigsaw method
• Domain: Teaching Strategies
• Sub-Domain: Instructional strategies
• Potential to Accelerate Student Achievement: Potential to considerably accelerate
• Influence Definition: The Jigsaw instructional method is a cooperative approach to learning originally developed by Elliot Aronson. Following this method, a teacher introduces a main topic and several subtopics. Jigsaw students are broken into “home groups”, and each member of the home group is assigned a subtopic. Then, students form expert groups to study their assigned subtopic through research and discussion. Then, after the students have mastered the subtopic in question, they return to their home group to report on their findings. At the conclusion of the exercise, each home group member has learned about each subtopic from a member of the relevant expert group or through their own investigation with an expert group.

## Evidence

• Number of meta-analyses: 1
• Number of studies: 37
• Number of students: 0
• Number of effects: 37
• Effect size: 1.20

## Meta-Analyses

Meta-Analyses
Journal Title Author First Author's Country Article Name Year Published Variable Number of Studies Number of Students Number of Effects Effect Size
EKEV Akademi Dergisi Batdi JIGSAW TEKNIGININ ÖGRENCILERIN AKADEMIK BASARILARINA ETKISININ META-ANALIZ 2014 Jigsaw on achievement 37 0 37 1.20
TOTAL/AVERAGE 37 0 37 1.20

## Confidence

The Confidence is the average of these four measures, each divided into five approximately equal groups and assigned a value from 1 to 5 based on the following criteria:

• Number of Meta-analyses
• 1 = 1
• 2 = 2–3
• 3 = 4–6
• 4 = 7–9
• 5 = 10+
• Number of Studies
• 1 = 1–10
• 2 = 11–50
• 3 = 51–200
• 4 = 201–400
• 5 = 400+
• Number of Students
• 1 = 1–2,500
• 2 = 2,501–10,000
• 3 = 10,000–20,000
• 4 = 20,000–100,000
• 5 = 100,001+
• Number of Effects
• 1 = 1–100
• 2 = 101–300
• 3 = 301–600
• 4 = 601–1,200
• 5 = 1,200+
Confidences
Number of Meta-Analyses Number of Studies Number of Students Number of Effects Overall Confidence
Confidence Factor 1 2 1 1 1