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Remote Ready Biology Learning Activities has 50 remote-ready activities, which work for either your classroom or remote teaching.
Animated, interactive lessons
1. The following is a good site for interactive lessons for children. It is great for intermediate students:
http://www.linkslearning.org/Kids/1_Math/2_Illustrated_Lessons/6_Weight_and_Capacity/index.html
2. This science site is ideal for middle school students or advanced students at the intermediate level:
http://www.linkslearning.org/Teachers/3_Science/4_Classroom_Ready/2_Middle_School/index.html
http://www.linkslearning.org/Teachers/3_Science/_images.html#