Then the workbook shuddered.
Lin Mei flinched. The pages riffled on their own, stopping at Chapter 9. The diagram of the circuit began to glow—a soft, copper-colored light. The lines of the wires shimmered, and then, impossibly, the schematic moved . Electrons, drawn as tiny blue dots, began to flow from the negative terminal of the battery, down the wire, through the lightbulb… and then they stopped at the empty space where the missing resistor should be. New Mastering Science Workbook 2b Answer Chapter 9
She sighed, flipping to the back. “Answers to Chapter 9,” the heading read. But below it, a single, devastating line: “Answers for Part D are provided only in the Teacher’s Edition.” Then the workbook shuddered
She almost closed the tab. But the clock flickered. 11:47 turned to 11:47 again. The second hand on her wall clock twitched backward. A cold draft, smelling faintly of ozone and old paper, curled around her ankles. The diagram of the circuit began to glow—a