"
Version 1.1 – Updated August 2021

# Discovery-based teaching

## Overview

• Influence: Discovery-based teaching
• Domain: Teaching Strategies
• Sub-Domain: Instructional strategies
• Potential to Accelerate Student Achievement: Likely to have positive impact
• Influence Definition: A practice in which students formulate clear, testable hypotheses, which they then test in a laboratory or workshop setting through direct experience. Often equated to project-based teaching or play-based teaching.

## Evidence

• Number of meta-analyses: 2
• Number of studies: 193
• Number of students: 0
• Number of effects: 394
• Effect size: 0.21

## 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
Unpublished Dissertation Mitchell A comparison of the effectiveness of innovative instructional methods utilized in lower division mathematics as measured by student achievement: a meta-analysis of findings 1987 Discovery methods in mathematics 29 0 34 0.11
Journal of Educational Psychology Alfieri, Brooks, Aldrich, & Tenenbaum USA Does discovery-based instruction enhance learning? 2011 Discovery methods 164 0 360 0.30
TOTAL/AVERAGE 193 0 394 0.21

## 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 2 3 1 3 2