2. Sudoku: In a 9x9 grid, fill in the number 1-9, so that the numbers in each row, column and 3x3 cell are not repeated.
3. Logical reasoning: Give some conditions or rules and ask students to get the correct answer through analysis and reasoning.
4. Conversion of fractions and decimals: Give some fractions and decimals and let students convert them into another form.
5. Calculation of area and perimeter of geometric figures: Give some geometric figures (such as squares, rectangles, triangles, etc.). ) and ask students to calculate their area and perimeter.
6. Clock problem: Give some information about time, so that students can judge the correct time.
7. Animal race: Give the speed and distance of some animals, and let the students calculate the time needed to finish the race.
8. Word Solitaire: Give a word and ask the students to say a new word according to the last letter of the word.
9. Fill in the blanks with poems: Give a rhyme poem from Kubinashi and ask the students to fill in the correct words.
10. Queuing problem: Give the number and order of a team and ask students to judge the rules in the team.
1 1. Translation game: Give some simple English sentences or words and ask students to translate them into Chinese or vice versa.
12. riddle guessing: give some puzzles for students to guess the answers.
These questions can not only exercise students' logical thinking ability, but also increase the fun of learning and make mathematics more interesting.