This book offers a comprehensive report on the technological aspects of Mobile Health (mHealth) and discusses the main challenges and future directions in the f...

Have you ever tried to learn more about some incredible thing, only to be frustrated by incomprehensible jargon? Randall Munroe is here to help. In Thing Ex...

To celebrate NASA’s Hubble Space Telescope and its 25 years of accomplishments, let The Hubble Cosmos fill your mind with big ideas, brilliant imagery, and a ...

To celebrate NASA’s Hubble Space Telescope and its 25 years of accomplishments, let The Hubble Cosmos fill your mind with big ideas, brilliant imagery, and a ...

"This is teaching at its best!"--Hans Camenzind, inventor of the 555 timer (the world's most successful integrated circuit), and author of Much Ado About Almost...

This book offers a comprehensive report on the technological aspects of Mobile Health (mHealth) and discusses the main challenges and future directions in the f...

Daily Math Subtraction Practice 500 WorksheetsThis e-book contains several subtraction worksheets for practice with one minuend of 4 digits and one subtrahend o...

Daily Math Division Practice 15 WorksheetsThis e-book contains several division worksheets for practice with one dividend of 3 digits and one divisor of 1 digit...

Daily Math Subtraction Practice 60 WorksheetsThis e-book contains several subtraction worksheets for practice with one minuend of 3 digits and one subtrahend of...

Daily Math Subtraction Practice 7 WorksheetsThis e-book contains several subtraction worksheets for practice with one minuend of 2 digits and one subtrahend of ...