April is the fourth month of the year.
August is the eighth month of the year.
Autumn is the season between summer and winter. Another name for autumn is fall.
You have a birthday every year.
A calendar lets you know what day it is.
A century is 100 years.
If you want to know what time it is, look at a clock. Digital clocks display the time using numbers (like 2:25); analog clocks display the time hands (as in the picture above).
A cuckoo clock has a mechanical bird that sings every hour.
The sun is up during the day.
Daylight savings time (abbreviated DST) is a system in which the time jumps ahead one hour in the spring and is set back one hour in the fall in order to save energy.
December is the twelfth month of the year.
Evening is the late part of the day and the early part of the night.
Fall is the season between summer and winter. Another name for fall is autumn.
February is the second month of the year.
A grandfather clock is a large, free-standing pendulum clock.
There are 24 hours in a day.
An hourglass measures time as sand falls through a thin opening.
An hour hand on a clock tells you what hour it is.
January is the first month of the year.
July is the seventh month of the year.
June is the sixth month of the year.
Dinosaurs flourished during the Jurassic period, 208-146 million years ago. Stegosaurus and Apatosaurus were two dinosaurs that lived during the Jurassic.
The sun sets late in the day.
March is the third month of the year.
May is the fifth month of the year.
The Mesozoic Era was the time when dinosaurs lived and mammals evolved. The Mesozoic lasted from 250 million to 65 million years ago. It began and ended with mass extinctions.
Midnight is 12:00 at night.
A minute hand on a clock tells you how many minutes past the hour it is.
There are 12 months in a year: January, February, March, April, May, June, July, August, September, October, November, and December.
The sun rises in the morning.
At night, when the sun goes down, you can see stars in the sky.
Noon is midday, 12:00, when the sun is closest to overhead.
November is the eleventh month of the year.
October is the tenth month of the year.
There are four seasons in the year: winter, spring, summer, and fall (also called autumn).
There are 60 seconds in a minute.
The second hand on a clock tells you how many seconds have gone by.
September is the ninth month of the year.
Spring is the season after winter and before summer.
Summer is the season between spring and fall (autumn).
Sunrise is the time when the sun rises.
Sunset is the time when the sun sets below the horizon.
Time is measured in seconds, minutes, hours, days, weeks, months, and years.
A timeline is a graphic display that shows a series of events that happen in a time period.
The Earth is divided into 24 time zones so that everyone in the world can be on roughly similar schedules (like having noon when the sun is highest in the sky).
Today is the day it is right now.
Dinosaurs and mammals first appeared during the Triassic period, which lasted from 248 million to 208 million years ago.
A watch is a small clock you can take with you to tell time.
There are 7 days in a week: Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, and Saturday. There are 52 weeks in a year.
Winter is the season between fall and spring. In the Northern Hemisphere, winters are cold; in the Southern Hemisphere, they are warm.
A year consists of 12 months, 52 weeks, or 365 days.