Untold provides educational video content to engage students in history learning — from educatorstechnology.com

Excerpt:

Untold is a platform that provides educational resources to engage students in history learning. The site offers a free collection of animated videos that shed light on alternative historical perspectives highlighting those stories and events that do not normally make it into the mainstream history textbooks. As they interact with these resources, students develop critical thinking skills required to help them evaluate and question the validity and authenticity of the information and news they deal with on a daily basis.

Untold materials are provided for free for teachers and students.