Wow! That's an amazing list! Thank you so much!

I've found these sources quite helpful with writing help:

grammar checker tool for grammar and general writing help
123 essays for great examples of writing and topic research

That was a good idea with some cute animation! It is quite informative as well! Do you have videos that provide some kind of writing help for children?

I think it is high time that both children as well as parents are well aware of global warming and strive to take care of our environment. Here are few informative resources about global warming:

https://en.unesco.org/themes/addressing-climate-change/climate-change-education-and-awareness
Global warming essays
 https://www.sciencedaily.com/news/earth_climate/global_warming/

Biology is a fascinating subject. I remember being so engrossed in Biology in high school. I was sure i would become a marine biologist one day but life had other plans

Teenagers are difficult to handle as they are often rebellious in nature. It is the age of adolescence. I have read a few books on teenage psychology to understand that as a parent you need to juggle between being a friend and being a guardian to your teen. You need to identify the moments when he needs a friendly shoulder to cry on. At the same time, you should not be afraid to reprimand if he has done something wrong.

Wow! It definitely looks great when compared to the traditional way of textbook learning.

At this age, it is only natural for the child to be drawn towards picture cards. Try blending other reading techniques along with cards. 

Some useful links for different subjects:

Science
Math
Social Science

I think this site is pretty good - https://www.itsokaytobesmart.com/

It makes STEM so much more interesting for children.

Teaching during vacation is not something I would ever do. But learning during vacation is always welcome. There is a difference between teaching a curriculum and learning things from real world experiences. When we go on a vacation, I encourage my daughter to maintain a journal and write what she saw, tasted and experienced through the day.  I push her to follow a hobby and try to incorporate that with learning in vacation because kids might hate studying but they will always find time for their hobby.  Recently, she developed an interest towards photography so we bought her a basic camera. She clicked pictures all through the vacation and learned so many things that a normal curriculum might not teach.