One of the most well-known program for brain exercise and mental health is Lumosity. Games, tests, and activities at Lumosity are scientifically backed
Elevate offers activities that focus on reading, writing, speaking, and math, and you can customize your training to concentrate on the subjects you find most interesting
The game of chess develops players' foresight, sportsmanship, and perseverance. It can sharpen students' thinking skills and help them better understand mathematical concepts.
Braingle claims to have the world's largest collection of puzzles, games, and other brain teasers. Engage yourself into math and reading exercises through the endless riddles and puzzles.
For exercising and testing your brain, it offers a variety of "brain tools" such as logic, verbal, spatial, and math puzzles; trivia quizzes; and aptitude tests.