Teach your students to remember "the doubles times tables" - 0 X 0 = 0, 1 X 1 = 1, etc. - using these step-by-step directions and posters.
Be sure to follow my TpT store! I always have a 50% off sale for each new lesson during the first three days once I post it at TpT.
Feel free to e-mail me at firstname.lastname@example.org if you have any questions.
Wishing you the best,