Maryland Math 1.GR.C.5
The Standard
Tell time in hours, half hours, and quarter hours using a digital clock or analog clock. Estimate time intervals (1 hour, 30 minutes, 15 minutes, 1 minute) for activities (e.g., sharpen pencil, soccer game, etc).
Maryland College and Career Ready Standards for Mathematics (2025) · WORK WITH TIME AND MONEY.
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students read and show times to the hour, half hour, and quarter hour on analog and digital clocks. They estimate whether familiar activities take about 1, 15, 30, or 60 minutes.
What Mastery Looks Like
- A student reads an analog clock showing 2:45 and writes 2:45, even though the hour hand is nearly at 3. They judge that sharpening a pencil takes about 1 minute, not 30.
Common Misconceptions
- Some students read 2:45 as 3:45 because the hour hand is close to 3. Others read a minute hand pointing to 3 as 3 minutes instead of 15.
How to Assess It
- Show an analog clock at 2:45. Ask students to write the digital time and circle the best estimate for sharpening a pencil: 1, 15, 30, or 60 minutes.
Lesson moves
Ways to Teach It
Give pairs movable clock hands and cards showing 2:00, 2:15, 2:30, and 2:45; have them build each time.
Ask students to write why they would allow 1, 15, 30, or 60 minutes to eat lunch.
Play clock bingo: call out digital times while students cover matching analog clock pictures.
Time pencil sharpening with a stopwatch, then choose whether 1, 15, 30, or 60 minutes is the closest estimate.
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Printable 1.GR.C.5 Worksheet
A ready-to-print activity worksheet aligned to 1.GR.C.5, with an answer key for the teacher on its own page. No account needed.
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Related Standards
- 2.GR.C.7
Tell and represent time to the nearest minute using multiple representations (e.g., digital clocks, analog clocks, number lines).
- 2.GR.C.8
Estimate and calculate elapsed time to the hour and half hour (e.g. If the school day begins at 8am and ends at 3 pm, the school day lasts 7 hours).
- 3.GR.A.2
Solve problems in context that involve addition and subtraction of time intervals in minutes (e.g., represent and solve using a number line).
- 3.GR.A.1
Measure the length of an object to the nearest half and quarter unit by using appropriate tools (e.g., rulers, yardsticks, meter sticks, and measuring tapes).
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