This will have fantastic use for primary level as well - maybe another separate (but closely related) app. Do consider special educational needs, e.g.
- emotion recognition, so pairs of happy faces, sad faces, angry faces etc to help the children detect emotions in the real world
- simple animals and objects to help with basic recognition
- images of nouns that are called "CVC" words - that's consonant-vowel-consonant words, like cat, dog, boy, bat (as in cricket), etc
- colours, so basic shapes in bright different colours
- letters, yep, just letters of the alphabet (and why stop at the english alphabet) - so a grid of vowels, and another of simple letters (not q,z,x etc)
Also, could you show the name of the object to the side of the grid? And also... add an optional timer to complete the level by, or just to time how long it takes them - the latter allowing the users to set their own targets. This kind of app would be used with the support of adults alongside SEN children
Good job!