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3-GM-3-1

Page history last edited by Tashe Harris 6 years, 2 months ago

3.GM.3.1 Read and write time to the nearest 5-minute (analog and digital).

In a Nutshell

In second grade, students learn to read and write time to the nearest quarter-hour. In third grade, they build upon this skill by learning to read clocks to the nearest 5-minute. This is a fundamental skill for students to master before moving into elapsed time in fourth grade.

Student Actions	Teacher Actions
Develop strategies for problem-solving in order to accurately tell the time on an analog clock. Strategies may include: Skip counting by 5’s to determine the minutes, using clock manipulatives, finding the nearest quarter hour and counting by 5 from there, multiplying the number the minute hand is on by 5 to determine the minutes, etc. Demonstrate procedural fluency when reading and writing time using appropriate vocabulary. For example: What time is it? “It is 10:10 AM” or “It is 10 minutes after 10 o’clock.”	Pose purposeful questions to help students recall prior knowledge and justify their thinking. Questions may include: Which mathematical strategy did you use to find the time? What other ways can we tell the time? Why is this skill important for us in our regular day? Facilitate mathematical discourse using time vocabulary and symbols, such as hour, minute, analog, digital, clock, etc. Elicit student thinking by challenging students to use different strategies to tell the time.
Key Understandings	Misconceptions
A clock is divided into 5-minute intervals and twelve hours. They make the connection that each time the minute hand moves to the next numeral, the time has increased by five minutes. Each time the hour hand moves to the next hour, the time has increased by an hour. The hour is read and written first, then the minutes. Telling time is a life skill that they will need to know how to do.	The hour hand is the minute hand and vice versa. They read or write the minutes first. The hour numeral represents the minutes (ex: 1:11 instead of 1:55). A.M. and P.M. are interchangeable. It is the next hour when the minute hand gets closer to the 12 (ex: They read 2:55 when it is 1:55 because the hour hand is closer to the 2 than the 1).