The total amount of activity should be spread over at least three days throughout the week.
VOA: special.2010.06.08
We've been working to make our schools healthier. We've been working to increase the amount of physical activity that our kids are getting, not just during the day at school but also at home.
VOA: special.2010.06.07
"Kids really get engaged in science in the garden where it's a kind of fun activity where they're collecting data and seeing how different temperatures will change the amount of water that's needed by a crop, so the science concepts come easily."
VOA: special.2011.06.14
应用推荐