Assessment
During the class, circulate while students are comparing their explanations. Listen to see if they are able to explain ethanol burning at both the macroscopic and atomic-molecular scales. Use 4.5 Grading the Explanations Tool for Ethanol Burning to grade your students’ work on the 4.5 Explanations Tool for Ethanol Burning. At this point in the lesson, students should be held accountable for correct answers.