睡眠质量指数
匹兹堡睡眠质量指数(Pittsburge Sleep Quility Index,PSQI)是世界上广泛采用的睡眠质量评价方法。分数范围0～21分，得分越高，表示睡眠质量越差。该指数可用于睡眠障碍、心身疾病、心理障碍患者的睡眠质分量评价、疗效观察等。临床上以5为划界分，大于5分可诊断为睡眠障碍，小于...
匹茲堡睡眠質量指數
Logo Car Quiz
Logo car quiz is a fun quiz game testing how much you know about your favourite car brands, their histories, founders and companies.Besides getting to...
Fractions 3: Addition and Subtraction of Fractions
bettermarks has reinvented math lessons just for you! At bettermarks, we think that mistakes are awesome. That's because you can only learn new stuff ...
Fractions 1: Basics of Fractions FREE
bettermarks has reinvented math lessons just for you! At bettermarks, we think that mistakes are awesome. That's because you can only learn new stuff ...
Fractions 2: Fractions Decimal Numbers and Percent
bettermarks has reinvented math lessons just for you! At bettermarks, we think that mistakes are awesome. That's because you can only learn new stuff ...
Fractions 2: Fractions Decimal Numbers and Percent
bettermarks has reinvented math lessons just for you! At bettermarks, we think that mistakes are awesome. That's because you can only learn new stuff ...
Fractions 1: Basics of Fractions
bettermarks has reinvented math lessons just for you!At bettermarks, we think that mistakes are awesome. That's because you can only learn new stuff b...
Logo 3D
Take the power of the Logo drawing language into the 3rd dimension and unleash your imagination with Logo 3D! There is no limit to the infinite variet...
Fractions - A Montessori Approach to Math
Experience an introduction to fractions with this app created for young children! Designed for use in the classroom and at home, it contains progressi...
Logix Box
Logix Box is Tap n Match puzzle game where you switch and drop hexagons to form vertical, horizontal, or diagonal lines of 3 or more of the same set. ...