B and D reversals and confusion are so common in beginning readers and writers. Here's some activities that I use to help correct these errors in my struggling readers.
Letter Reversal Poster - b and d - Kelly Dugan - TeachersPayTeachers.com
FREE visual discrimination posters for tricky letter b and letter d. Different formats included, too.
Easy Trick for B and D Reversals - FREE Printable - This Reading Mama
Helping B and D Reversals (freebie included)
Solving B and D Letter Reversal Problems with Simple Tricks
Great trick for teaching children how to remember the positioning for lower case b and d
Tons of fun and engaging activities to help with b/d reversals.
Inspired by Kindergarten: b and d Confusion - dabbers or similar
B and D reversals - visual reminder FREEBIE