Curated OER
Countdown
How many days until summer? Find a special day, and use this activity to determine how many days, weeks, hours, even seconds until it arrives! There are three levels of difficulty, which can provide differentiated instruction with...
Shodor Education Foundation
Shodor Interactivate: Stopwatch
This is a general-use stopwatch that can serve any purpose, for any subject area. The stopwatch counts up and down, records times that events happen, and also includes a buzzer that will activate at any time the user chooses. Java is...
Other
Time and date.com
This is a free site which began with the World Clock, and has grown to include many other wonderful tools for learning about time and date. what makes this site distinctive, is its ability to manipulate the perspective internationally to...