Tell time to the minute. Solve addition and subtraction problems involving time in minutes. Solve word problems and mathematical ones.
Here's an interesting word problem: How much daylight is there on a day when the sunrise is at 7:14 a.m. and the sunset is at 5:11 p.m.? (source)
Answer: 9 hours, 57 minutes
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Next, give your students this challenge:
2019 Math Kangaroo Levels 1-2 Problem #21 by STEM4all
Conclude by leading this investigation:
Pillage and Profit (algebra)
3.MD.A.1: Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.