Timing Races by Dianne Irving
$11.68
Shop on Better World Books
Add to price tracker
Description
In races, we want to know who comes in first and how long it took him or her to finish. Before we used manual stopwatches, but today we use digital timers. There are many rules in races to make sure the times are accurate. People try to break world records in races, and the times are only fractions of a second apart.
