This activity is a great introduction to speed and motion. Students measure the time it takes to walk 5 meters and use this to calculate their average speed. They are then given the challenge to see if they can estimate an unknown distance using their average walking speed and the amount of time it takes to walk the unknown distance. Needed Materials: Meter sticks or metric measuring tape Timers/stop watches Sidewalk chalk, tape, cones, etc for marking start and ending calculators To do this activity, find a place outside with plenty of space. I use the blacktop at my school and have the students mark their distances on the ground using sidewalk chalk. You can also do the activity on the field and use cones or other markers. Measure and mark an unknown distance for the students to estimate in part 2. I do between 10 – 20 meters. In part 2 of the activity, students will measure the time it takes to walk this unknown distance and use this to estimate the distance. You can set up several different distances too. Students love being outside and gathering data. This is a great way to introduce calculating speed and the speed equation. It also shows students that the equation can be rearranged to calculate distance.