Virginia SOL 4.MG.2.a.i
The Standard
the starting time and the ending time, determine the amount of time that has elapsed in hours and minutes
Virginia Standards of Learning for Mathematics · The student will solve single-step and multistep contextual problems involving elapsed time (limited to hours and minutes within a 12-hour period).
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students use a starting time and an ending time to find how much time passed. They count hours and minutes within the same morning or afternoon, or across noon.
What Mastery Looks Like
- Students find the duration between two times and label the answer in hours and minutes. They can cross noon, regroup 60 minutes as one hour, and check that the duration fits the situation.
Common Misconceptions
- Students may subtract clock numbers as if an hour has 100 minutes. They may also mishandle noon, confuse a.m. and p.m., or count the starting minute as elapsed time.
How to Assess It
- Exit ticket: A museum visit begins at 10:45 a.m. and ends at 1:20 p.m. How long is the visit? Show your time jumps.
Lesson moves
Ways to Teach It
Pairs use geared clocks to model a bus trip from 10:35 a.m. to 1:10 p.m., recording hour and minute jumps.
Ask students to explain why counting to noon first can make an a.m. to p.m. problem easier.
Play Elapsed Time Match by pairing schedule cards with duration cards, then explaining one match on a number line.
Students use the class schedule to find how long lunch, recess, and specials last, including one interval that crosses noon.
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Printable 4.MG.2.a.i Worksheet
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Related Standards
- 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
- 3.MG.3.c.i
the starting time and the ending time, determine the amount of time that has elapsed;
- 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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