Math Mammoth Clock is a worktext that covers telling time and reading the clock, telling time intervals, and understanding teh calendar.
The book contains both textbook explanations and exercises, and is designed to be very easy to teach from, requiring very little teacher preparation.
Math Mammoth Clock covers reading the clock, figuring out simple time intervals, and using the calendar, all in one book. The topics progress starting from the first grade level to the third grade level. Therefore, you also can let your child work the pages of this book in different time periods, and not go through it all at once, depending on your child's current level.