Compare Two Times on One Day
Notice whether two recorded observations match.
Supplied materials
- Use the supplied fictional observations or model. Paper and pencil are optional; spoken answers are welcome. No equipment or real experiment is needed.
Learn the idea
A time label helps explain when an observation happened. Two notes from one day need not match. Weather can change during a day, so a morning note is not a promise about the afternoon. Comparing means looking at both notes and saying what is the same or different.
Read these pretend notes from one place: Tuesday morning sunny, Tuesday afternoon cloudy; Wednesday morning rainy, Wednesday afternoon rainy. Keep the day names together. Tuesday has different labels at its two times. Wednesday has the same label at both times, but we have no note for the night.
- Ask an adult to read each morning and afternoon pair.
- Draw two boxes for Tuesday and two for Wednesday.
- Put a sun, cloud, or raindrop in each box using the notes.
- Point to the day whose two boxes match.
See the method in action
For Tuesday, sunny and cloudy are different labels. For Wednesday, rainy and rainy match. Two matching notes do not tell us every moment of the day.
Check your reasoning
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See the answer and explanation
Wednesday only
Wednesday is labeled rainy at both recorded times. Tuesday changes from sunny to cloudy.
Take it further
Change Wednesday afternoon to sunny. Both days now have different morning and afternoon labels; neither pair matches.
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