My Take
I remember using this so often when I was a younger student. BrainPOP consistently has information and videos revolving around a myriad of topics that young kids can easily benefit from.
Some parts of the site feel very dated, but I do very much like the sheer amount of available content on the site. There are so many options for all sorts of young learners. Each topics has different quizzes, related vocabulary, and related readings. The characters are relatable and cute for younger children too.
How I Use It
I would absolutely use this to touch on specific topics to subsequently quiz my students on. It's something that can be additional to other subjects that are being taught within the course.