Second Stealth Slides
A detective-themed slide deck for teaching elapsed time in seconds. Includes a warm-up activity, embedded instructional video, strategy recaps for skip-counting and subtraction, and instructions for the 'Time Detectives' activity.
Time Detective Worksheet
A detective-themed worksheet for 3rd-grade students to practice calculating elapsed time in seconds. Includes four word problems of increasing difficulty, with spaces for student work and final answers.
Mission Briefing Answer Key
An answer key for the Time Detective Worksheet, providing the correct durations and strategy breakdowns for each of the four cases.
Time Detective Teacher Guide
A comprehensive teacher guide for the 'Second Stealth' lesson, including pacing, specific 'Pause & Ask' video moments, common misconceptions, and facilitation prompts.
Evidence Clock Templates
A set of blank analog clock templates for students to use as visual aids for calculating elapsed time. Includes four labeled 'Evidence Clocks' corresponding to worksheet cases and an extension area.