Virginia SOL 3.MG.3.c.i
The Standard
the starting time and the ending time, determine the amount of time that has elapsed
Virginia Standards of Learning for Mathematics · The student will demonstrate an understanding of the concept of time to the nearest minute and solve single-step contextual problems involving elapsed time in one-hour increments within a 12-hour period.
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students find how many whole hours pass between a given starting time and ending time. They count forward on a clock or timeline within the same a.m. or p.m. period.
What Mastery Looks Like
- A student correctly finds the number of whole hours between two times in the same a.m. or p.m. period. The student can show the count using a clock, timeline, or subtraction equation.
Common Misconceptions
- Students may count both the starting and ending hour, giving 6 hours from 3:00 to 8:00 instead of 5. They may count backward or confuse elapsed time with the ending time.
How to Assess It
- Use this exit ticket: “Soccer practice starts at 3:00 p.m. and ends at 5:00 p.m. How long is practice? Show your thinking.”
Lesson moves
Ways to Teach It
Give pairs two teaching clocks, set start and end times, then have students move one hour at a time and record each move.
Ask, “Why is the time from 2:00 to 6:00 four hours, not five?” Students explain with words and a timeline.
Play Time Match by having students pair start-and-end time cards with the correct elapsed-time card.
Use a class schedule to find how many whole hours pass between morning arrival and lunch or between lunch and dismissal.
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Printable 3.MG.3.c.i Worksheet
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Related Standards
- 4.MG.2.a.i
the starting time and the ending time, determine the amount of time that has elapsed in hours and minutes;
- 4.MG.2.a.iii
the ending time and the amount of elapsed time in hours and minutes, determine the starting time.
- 3.MG.3.c.ii
the starting time and amount of elapsed time in one-hour increments, determine the ending time; or
- 4.MG.2.a.ii
the starting time and amount of elapsed time in hours and minutes, determine the ending time; or
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