Colourful Education Presentation for PowerPoint
https://elements.envato.com/colourful-education-presentation-for-powerpoint-LR2TVBL
Free 
SCIENCE LESSON – Education Powerpoint Template
https://elements.envato.com/science-lesson-education-powerpoint-template-GQ9KQ8U
Free 
Educate – Education PowerPoint Template
https://elements.envato.com/educate-education-powerpoint-template-NR952PN
Free 
Educate – Education Keynote Template
https://elements.envato.com/educate-education-keynote-template-XVK8D4T
Free