It is important for children to grasp the concept of uppercase and lowercase letters in order for them to be successful at both reading at writing.

http://www.heartolearn.org/materials/docs/Upper%20Case%20lower%20case%20dino%20match_Jan2020.pdf?fbclid=IwAR2_EnpLE0FWKMGMD8xR_g2koa0of9JzHCXTTStwyrY7alSmQ7zPdc9UP1g