"A group of grade 4 learners is asked to work on a project about the impact of poaching in Africa's wildlife. They come across a blog which supports poaching as a means to provide funding to animal shelters and protected areas. Students present those ideas as their own."

In the given case study, the reliability of internet sources can not be trusted and possibilities are that such sources are biased.

Explanation:

Poaching is an illegal act of hunting or trapping of animals. So, internet sources that the grade 4 learners came across can not be trusted. The reliability of the blog can not be trusted as it supports the poaching system and confirms it to be a source of funding to animals. Since poaching an illegal act a blog that claims to support such an act would be unreliable and biased.

For the fact, all internet sources can not be relied upon because not all of them assures good quality of information, their accuracy can not be trusted. Some sources are biased also. This problem arises because now people have access to post anything on the internet whether reliable or not.