1. Digital maze: In the digital maze, students need to find the correct path by solving mathematical problems. For example, there is a math problem at every intersection in the maze, and students need to calculate the correct answer to move on.

2. Math puzzles: Give students some interesting math puzzles to think about and answer. For example, "I have five apples and gave three to my friends." How many do I have left? " Or "The length of a rectangle is10cm, and the width is 5cm. What is its circumference? "

3. Math games: Design some math games to let students learn math knowledge in the games. For example, in the "Guess Numbers" game, students need to guess what a randomly generated number is, and gradually narrow the scope according to the prompts.

4. Math puzzles: Turn some math problems into puzzles and let students solve math problems through puzzles. For example, to turn an addition formula into a puzzle, students need to put the puzzle together correctly to get the correct answer.

5. Math Competition: Organize some small math competitions to let students learn and improve in the competitions. You can set different topic types and difficulties, so that students can choose to participate according to their own abilities.

These interesting math problems can help primary school students learn math knowledge in a relaxed and happy atmosphere, and cultivate their logical thinking and problem-solving ability. At the same time, these topics can also stimulate students' interest in mathematics and make them participate in mathematics learning more actively.