When the Letter R runs into the Number 4 in the middle of a crossword puzzle, their argument of who is better heats up. Can a Letter count? Can a Number spell? And more importantly, can they figure out a way to work together to solve the crossword puzzle? Your child will love this amusing story on your Android device while learning their letters and numbers.

This e-book is written, illustrated, and self-published by DrTechniko. DrTechniko is a scientist and a parent whose goal is to educate kids about science and technology through stories.