"[A] straightforward book that conveys, quite imaginatively, different ways of thinking about time – and by extension, clocks, calendars, cardinal and ordinal numbers, seasons, and even centuries ... a great deal of cleverly, efficiently presented material." - The New York Times

"Explanations of how to tell time on a clock, how hours create days (and weeks, months, and years) also appear, with Estellon's cheerful cartooning offering both entertainment and visual support for each topic." - Publishers Weekly

"From one second to one century, the idea of time and its measurement is discussed in terms that any youngster can understand."
- Kirkus Reviews

"Well-suited for both the classroom and home ... Estellon's clever and seamless transitions make for a real page-turning book." - Canadian Review of Materials

"An informative little book that takes readers on an interactive learning experience." - Education Library, The University of British Columbia

"Thought was definitely put into the age and skill level of [the]
audience and each of the activities were something that my children
could easily complete, with a little help." - Mostly Together Mommy (blog)