From the website: This interactive Java applet allows the user to practice calculating an ending time or a beginning time given the elapsed time using analog or digital clocks. Using the "See" mode the user advances (or rewinds) a clock from the given time using the elapsed time to find the ending (or beginning) time. Using the "Guess" mode, the user must calculate the ending (or beginning) time given the elapsed time. Three difficulty levels allow the user to practice with hour, five minute, or single minute increments. An optional scoring feature allows the user to keep track of number correct.

    • Note: This is intended for grades 3, 4, 5
However, teachers can lead 1st and 2nd graders through a discussion of how the clock moves as the time progresses.

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