Units of time
- Intro Lesson: a12:29
- Intro Lesson: b7:04
- Intro Lesson: c7:56
- Lesson: 12:54
- Lesson: 2a3:18
- Lesson: 2b4:39
- Lesson: 2c4:30
- Lesson: 2d2:42
- Lesson: 3a7:44
- Lesson: 3b5:20
- Lesson: 3c6:40
- Lesson: 4a3:27
- Lesson: 4b4:48
- Lesson: 4c4:05
- Lesson: 4d2:38
- Lesson: 4e3:50
Units of time
Lessons
In this lesson, we will learn:
- The different units of time: years, months, weeks, days, hours, minutes, and seconds
- The units of time for many years: decades, centuries, millennia
- How to convert between the different units of time
Notes:
- Units of time are intervals of time that measure duration
- The most common units of time that we see are: years, months, weeks, days, hours, minutes, and seconds

- Even longer intervals of time include: decades, centuries, and millennia

- When converting between different units of time:
- Multiply when changing from bigger to smaller time units
- Divide when changing from smaller to bigger time units
- Use the conversion list of equivalent times:

- Examples:

- IntroductionIntroduction to Units of Time:a)What are the different units of time?b)When to multiply or divide when converting units of time.c)How to convert between different units of time.
- 1.Common Durations of Time
Which unit of time should you use to describe the following?- Listening to a song?
- Watching a movie?
- Typing a question into a website browser?
- 2.Converting Units of Time in a Table
Fill in the table to convert between different units of time.a)Minutes and secondsb)Hours and minutesc)Days and hoursd)Weeks and days - 3.Converting Between Different Units of Time
Fill in the blanks by converting the timesa)Between seconds, minutes and hours
5 min = ____s ____min = 2 h 1 h = ____s ____h = 240 minb)Between hours, days and weeks
4 d = ____h ____wk = 35 d 1 wk = ____h ____h = 3 dc)Between months, years, decades, centuries and millennia
2 y = ____mo __decades = 20 y 5 centuries =__y __millennia = 8000 y - 4.Comparing Different Units of Time
Which amount of time is longer? Show your work; convert times into the same units to compare.a)90 min OR 1 h 40 minb)267 s OR 5 min 4c)126 h OR 4 d 21 hd)28 d OR 3 wk 5 de)30 mo OR 2 y 5 mo