Finally, why didn't i look this up sooner?! How to enable “Kid Mode” on iPad, iPhone, or iPod touch. You can lock kids into certain apps & disable parts of the screen so they can't click on the ads // awesome. Just set it up! SO easy!!
42 STEM iPad Apps for Kids (Science, Technology, Engineering, Math)
APPitic is a directory of apps for education by Apple Distinguished Educators (ADEs) to help you transform teaching and learning. These apps have been tested in a variety of different grade levels, instructional strategies and classroom settings.