In this Cyberchase video segment, Matt uses subtraction to help Digit figure out how much time he has left in a cooking contest with Hacker.

Robbie's car needs to go to the auto mechanic, so Blossom and Snappy think of other ways she can get to work. They learn how the Atlanta transit system works, they visit the airport, and they even explore the possibilities of Robbie renting a car, riding a skateboard, a wagon, going horseback, roller-skating, or climbing a tree.

Video tutorial uses examples and formulas to show how to derive displacement as a function of time, constant acceleration, and initial velocity. [9:57]

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

This short video and interactive assessment activity is designed to teach second graders an overview of elapsed time.

This short video and interactive assessment activity is designed to teach third graders an overview of telling time to 1-minute intervals.

This short video and interactive assessment activity is designed to give fourth graders an overview of elapsed time.

This short video and interactive assessment activity is designed to teach fourth graders about elapsed time in a sequence of events - word problems.

This short video and interactive assessment activity is designed to teach fifth graders about determining duration time - one step with timeline.

This short video and interactive assessment activity is designed to teach fifth graders about determining the elapsed time given start and end time.

This short video and interactive assessment activity is designed to teach fourth graders about ending time in 5-minute intervals - word problems.

This short video and interactive assessment activity is designed to teach third graders about solving for beginning time in 5-minute intervals - word problems.

This short video and interactive assessment activity is designed to teach second graders about determining time changes in 5-minute intervals.

This short video and interactive assessment activity is designed to give fourth graders an overview of speed based problems.

This short video and interactive assessment activity is designed to give fifth graders an overview of speed based problems.

The CyberSquad must construct a clock of sorts in order to keep track of the amount of time they have to rescue Dr. Marbles in this video segment from Cyberchase.

This short video and interactive assessment activity is designed to teach third graders about beginning, ending, and elapsed time with clocks - word problems.

This short video and interactive assessment activity is designed to teach second graders about beginning, ending, and elapsed time with clocks - word problems.

This short video and interactive assessment activity is designed to teach fourth graders about beginning, ending, and elapsed time with clocks - word problems.

This short video and interactive assessment activity is designed to teach second graders about solving for start time, end time, or elapsed time.

This short video and interactive assessment activity is designed to teach fifth graders about elapsed time - finding the starting time (single step).