time measurements

Introduces the concept of time and describes different parts of the day, such as morning, afternoon, and evening.

Simple Spanish text and activities explain the nature of time, its importance, and its measurement, exploring days of the week, seasons, months of the year, the concepts of past, present, and future, and more.

Introduces the concept of time and describes different parts of the day, such as morning, afternoon, and evening.

A comprehensive description of time theories and timekeeping through the years, from earliest calendars and sundials to atomic-powered clocks.

Discusses the science of space and time, including gravitational forces, worm holes and black holes.

Teddy Bear's activities illustrate the meaning of different time measurements, including clock time, days, months, seasons, and years.

A young person uses a travel journal and the skills of addition and subtraction to keep track of how much time his family spends at various attractions while visiting Chicago.

Explores the measurement of time, including days, weeks, months, and years, and introduces clocks and how to read them to determine seconds, minutes, and hours.