Excellent Concept
The concept seems fairly solid. The vowels are colored differently from the consonants and the letters say their sounds and not their name. It is also alot of fun. I do wish for more parental controls. The fireworks/animations are indefinite. It would be good to have the reward on a timer. I would also like the option to toggle off the ability to simply reveal the answer. The ultimate would be being able to add your own word list.
Pilgrimhere about Montessori Crosswords - Teach and Learn Spelling with Fun Puzzles for Children