科学与环境

Holding out or holding back? Kindergarten redshirting and retention shifted sharply during the pandemic

来源: Phys.org - latest science and technology news stories · 发布于

Holding out or holding back? Kindergarten redshirting and retention shifted sharply during the pandemic
来源: Phys.org - latest science and technology news stories

By the time a child reaches the age of 4 or 5, most parents and caregivers have heard about "kindergarten readiness." But what if a 5-year-old still struggles to count to 10, sing the alphabet song or play cooperatively with other children?

By the time a child reaches the age of 4 or 5, most parents and caregivers have heard about "kindergarten readiness." But what if a 5-year-old still struggles to count to 10, sing the alphabet song or play cooperatively with other children?

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AI listens to bee buzzes to monitor activity without lethal traps
科学与环境

AI listens to bee buzzes to monitor activity without lethal traps

Populations of many pollinators, including bumblebees, have been crashing over the last few decades, thanks to the widespread use of chemical pesticides, loss of habitat and the acceleration of climate change. But it can be hard to know just how bad the problem is, or whether con

Phys.org - latest science and technology news stories ·