The goal of this math worksheet is to help third and fourth-grade students practice calculating elapsed time through a Halloween-themed story. To do this, students will read a set of clues that describe eight different events that occurred during a boy's night of trick-or-treating. By using these clues, students will reconstruct a timeline of the evening. This worksheet provides a fun and engaging way for students to practice finding elapsed time to the minute from word problems. For extra practice, students can try Halloween Timeline #2.