LOl, I had a huge problem with this! I had an unmotivated, struggling son and a father in law who was a math teacher! Every time he came over he would ask my son a multiplication problem. It started as a joke but ds did not think it so and he became very hesitant every time he heard Pappa was coming over. I had to do something so I resorted to 1. asking pappa to stop! (he wasn’t very happy with me) and 2. plain old bribery. My son could retain the facts, was having no problem with his math program – he just was unmotivated to see the purpose of memorizing. SO, I bought a lego kit. A nice lego kit that he had been drooling after. I set it up high, in plain site, and explained to him that when he could answer any and all multiplication Q’s thrown at him, it was his. Took the lad 3 months and pretty near drove him to distraction, lol, but it was worth it. That son is now 26 and still enjoys talking about those months, he has great memories now and even jokes with his Pappa about it! He was 11 when we played that out. Now I haven’t had to use the same technique on any of the other kids, but it sure was needed with that one, and it worked! lol, just had to share the memory……… good luck
Heidi