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...
TeachEngineering
Teach Engineering: Make an Alarm!
After reading the story "Dear Mr. Henshaw" by Beverly Cleary, students will build an alarm system for something in the classroom, as the main character Leigh does to protect his lunchbox from thieves. Students will learn about alarms and...
Math Is Fun
Math Is Fun: Stopwatches
Use this online stopwatch to learn about elapsed time. This timer can time three different events at once and has an alarm.