One of the most common concerns elementary teachers have: “They’re still mixing up b and d… is it a concern?" Letter reversals before grade three can indicate the brain is learning orientation matters. The brain is designed to recognize objects as the same no matter the direction. This is actually called mirror invariance. That helps us in everyday life, but reading asks the brain to do the opposite. Now direction suddenly matters. This is why we explicitly teach letter formation and provide repeated practice.

Writing letters in a consistent way helps anchor orientation, connect sound to symbol, and build a stable reading pathway.