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During high school, most students were fed up with learning statistical probability. Because this form of mathematics not only requires calculation, but you also have to know how to reason, think about many problems and solve them in order to complete them.
But don’t believe it, knowledge of statistical probability comes from … first grade exercises! Recently, a mother got tired of publishing her son’s work with an exclamation: “You have the answer to this question 4, but I accept it. This is the knowledge of statistical probability, which questions 1st graders to solve.”
Attached is the problem: “In the cloth bag there are 3 blue marbles and 1 red marble. Without looking at the bag, how can I choose a red marble? 1 green marble.”
This is known to be a problem in the textbook for grade 1 students. Many parents are surprised and think that this problem puzzles both parents and elementary school children when they put high school knowledge to solve . . “1st grade math is so hard while kids can’t read and write fluently”, “Parents still think it’s impossible, could you spill it moms?” …
However, the solution is extremely simple, just a puzzle! A teacher shared the solution: If you want to get the blue marbles, you will get 2 balls, and if you want to get the red ones, you will get 4 balls. Because the problem only rolls 1 time, there is no limit to the number of marbles we take.
This teacher added: “This problem is a form of limit determination, one of the basic foundations of the probability approach. Probably borrowed from the UK, Singapore, or US math program, but there is no adequate theoretical explanation for parents to read. panic.
I think if mothers teach their children with the Cambridge calculus method, it is not difficult. Determine the target group to calculate the limit and the limit of that group to predict. But in fact, when you read this article, I think 90% of primary school kids can’t figure it out. “
And you, how do you feel about this grade 1 problem?
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