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Systems and Scale | Activity 5.5

Activity 5.5: Systems and Scale Unit Posttest (20 min)

Target Student Performance

Students show their end-of-unit proficiencies for the overall unit goal: Questioning, investigating, and explaining how matter and energy changed during combustion of organic materials.

Students retake the pretest that they took at the beginning of the Unit to assess what they have learned about materials and combustion.

Materials You Provide

  • Pencils (1 per student)

Resources Provided


Print one copy of the 5.5 Systems and Scale Unit Posttest for each student.


1. Describe the unit posttest.

Explain the purpose of the unit posttest to students:

  • It will help you as a teacher understand how students think about what happens when ethanol burns.
  • It will help them think about what they learned and how their ideas changed over time.


Students should be able to answer the questions correctly, so it is reasonable to grade them at this point. Use 5.5 Grading the Systems and Scale Unit Posttest to check student answers.