Language strategies for english language learners in science
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Language Strategies for English Language Learners in Science. By Melinda Moya. Table of Contents. Research Design Threats to Internal Validity Threats to External Validity Pre-Test and Post-Test for Experimental Group Pre-Test and Post-Test for Control Group Data Analysis Survey

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Language strategies for english language learners in science

Language Strategies for English Language Learners in Science.

By Melinda Moya


Table of contents

Table of Contents

  • Research Design

  • Threats to Internal Validity

  • Threats to External Validity

  • Pre-Test and Post-Test for Experimental Group

  • Pre-Test and Post-Test for Control Group

  • Data Analysis

  • Survey

  • Reference


Research design

Research Design

  • Quasi-Experimental Design:

    Nonequivalent Control Group Design

  • Two groups of ELL students. The first group is the experimental group X1

  • The second group is the control group X2. Here the treatment will be classroom instruction.

    Both groups will receive a Pre-test and a Post-test O.

  • Symbolic Design:

  • O X1 O

  • O X2 O


Threats to internal validity

Threats to Internal Validity

  • History: Any past experiences or cultural background can affect participation or involvement.

  • Maturation: Students individual attitude and experience towards Science, language skills, and computer usage may lead to loss of interest or participation.

  • Testing sensitization: Students may not take Pre-testing or post-testing seriously.


Threats to external validity

Threats to external validity

  • Pretest-treatment: Pre-test scores may affect feelings towards post-test.

  • Hawthorne effect: Students may have the feeling of “being watched” and they perform according to the way they think researcher wants to find.

  • Experimental effects: Teachers may feel they need to teach for the test during this time of year.


Pre test and post test for experimental group

Pre-test and Post-Test for Experimental Group

Average Pre-test: 58.07


Post test and post test for control group

Post-Test and Post Test for Control Group


Data analysis

Data Analysis


Survey

Survey


Reference

Reference

  • O’Connor-Petruso, S. (2012). Descriptive Statistics. Descriptivestatisticsthreatsvaliditysocp2012.pptx


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