This reminds me of the eye chart used in some countries, because it isn't based on reading letters, but on a direction.

For example [0], you should indicate the direction where the E points to.

[0]: https://m.media-amazon.com/images/I/61MRfRwHwWL._SL1235_.jpg

https://en.m.wikipedia.org/wiki/E_chart

This is for kids.

I remember this from when I was a child. Was maybe 4-5 and had not learned the letters yet. But I could turn my hand.

Too many Red Ramages driving submarines I suppose.