Matchstick Puzzles – Challenge your children with this great maths extension or problem solving activity where children must move the required amount of matchsticks to make the equation correct. My children could not get enough of this activity! Happy teaching! - https://www.teacherspayteachers.com/Product/Match-Stick-Maths-Problem-Solving-Task-Cards-Grade-5-and-6-Extension-Activity-2615829
Interesting! I have experienced many of symptoms on the right - both good and bad. I think this article has a lot of good points but there are so many other contributing factors to these symptoms as well.