Curated OER
Telling Time Puzzles
In this reading clocks worksheet, students use the three parts of the time puzzle that is shaped like a wrist watch. Students use the watches to practice telling time.
Shodor Education Foundation
Shodor Interactivate: Lesson: Clock Arithmetic and Cryptography
This lesson plan is designed to guide students in practicing their basic arithmetic skills by learning about clock arithmetic and cryptography. Linked resources include helpful applets.