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  • 2nd Grade

    Matter and Its Interactions

Students who demonstrate understanding can:

Performance Expectations

  1. Construct an argument with evidence that some changes caused by heating or cooling can be reversed and some cannot. 2-PS1-4

    Clarification Statement and Assessment Boundary

A Peformance Expectation (PE) is what a student should be able to do to show mastery of a concept. Some PEs include a Clarification Statement and/or an Assessment Boundary. These can be found by clicking the PE for "More Info." By hovering over a PE, its corresponding pieces from the Science and Engineering Practices, Disciplinary Core Ideas, and Crosscutting Concepts will be highlighted.

By clicking on a specific Science and Engineering Practice, Disciplinary Core Idea, or Crosscutting Concept, you can find out more information on it. By hovering over one you can find its corresponding elements in the PEs.

Planning Curriculum

Common Core State Standards Connections


  • RI.2.1 - Ask and answer such questions as who, what, where, when, why, and how to demonstrate understanding of key details in a text. (2-PS1-4)
  • RI.2.3 - Describe the connection between a series of historical events, scientific ideas or concepts, or steps in technical procedures in a text. (2-PS1-4)
  • RI.2.8 - Describe how reasons support specific points the author makes in a text. (2-PS1-4)
  • W.2.1 - Write opinion pieces in which they introduce the topic or book they are writing about, state an opinion, supply reasons that support the opinion, use linking words (e.g., because, and, also) to connect opinion and reasons, and provide a concluding statement or section. (2-PS1-4)

Model Course Mapping

First Time Visitors

Resources & Lesson Plans

  • More resources added each week!
    A team of teacher curators is working to find, review, and vet online resources that support the standards. Check back often, as NSTA continues to add more targeted resources.
  • This lab activity explores four materials, crayon, pasta, matches, and lemonade, after they have heat added to them. The students collect and analyze information about whether or not the materials change state and if the chan ...

  • This three minute video is great for teachers who need a short and deeper understanding of what is entailed in the Performance Expectations for Properties of Matter and what is involved when a physical and chemical change occurs. It would be over the ...

  • This is an lesson plan that accompanies the reading or watching of The Magic School Bus Bakes a Cake, or Ready Set Dough. The lesson is a short activity with guided questions that accompany making prezel dough. In the bo ...

  • This lesson is designed for K-2 students. In the lesson, students will gain an understanding of the water cycle and make observations of water in several different forms (solid, liquid, gas) to gain critical understanding that water is cons ...

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Planning Curriculum gives connections to other areas of study for easier curriculum creation.