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  • Tell students that Activity 1 (Constructing an Argument) of the lesson Will There be Enough Fresh Water? introduces the structure of the scientific argumentation they will be asked to do for the rest of the lesson. Tell students that Activity 1 will give them practice with analyzing a data set and making a good scientific argument from the evidence. Encourage students to review the questions and example best answers provided in Activity 1 before starting on the current activity.

  • Subjects & Disciplines

    • Science
      • Environmental
      • General science

    Learning Objectives

    Students will:

    • create a good scientific argument in the context of freshwater availability

    Teaching Approach

    • Learning-for-use

    Teaching Methods

    • Self-directed learning
    • Self-paced learning
    • Writing

    Skills Summary

    This activity targets the following skills:

    • Critical Thinking Skills
      • Creating
  • What You’ll Need

    Materials You Provide

    • Computers with Internet connection

    Required Technology

    • Internet Access: Required
  • Background Information

    Prior Knowledge

    • None

    Recommended Prior Activities

    • None


    Term Part of Speech Definition Encyclopedic Entry
    claim Verb

    to state as the truth.

    dam Noun

    structure built across a river or other waterway to control the flow of water.

    discharge Verb

    to eject or get rid of.

    dissolve Verb

    to break up or disintegrate.

    evidence Noun

    data that can be measured, observed, examined, and analyzed to support a conclusion.

    freshwater Noun

    water that is not salty.

    salinity Noun




This material is based upon work supported by the National Science Foundation under Grant No. DRL-1220756. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.