Help students understand the three variables in elapsed time: missing start time, missing stop time, and time that's passed. This helps students understand how to tackle elapsed time word problems.
First, students practice figuring out how many hours have passed using a number line. In the first section the concept of counting from 12 back to 1 is practiced.
Each section ends with word problem practice and an optional early finishers slide.
The second section has students practice solving