Animated children videos for teaching

Hi I wanting to create an online curriculum that can be completed by children to develop different skills. To help show them the skill I would like to create animated videos. I haven't yet decided on the curriculum outline, content etc but need to understand the cost. I am hoping to create 100 + videos. Roughly what is the cost per video. If each video is 2 mins long and I have written a rough buget I am wanting to spend.