"Simple Random Phenomenon and Equal Possibilities" Possibility PPT Courseware

Description

"Simple Random Phenomenon and Equal Possibilities" Possibility PPT Courseware

teaching objectives

1. In game activities such as tossing coins and rolling dice, feel the possibility of simple random phenomena and results.

2. Able to judge and describe the results of random phenomena in simple situations, and be able to clearly express the process of judgment and thinking.

3. Actively participate in mathematics activities, be curious about random phenomena in life, and feel that mathematics is everywhere in life.

Coin flipping game.

It may be heads up or tails up.

group games

Require:

(1) Everyone takes turns tossing a coin, first guessing which side is up, and then tossing it. Each person tosses 10 times and records the guess and toss results.

(2) Communicate the results of coin toss between each group.

Discussion: Can you guess which side is up before tossing a coin?

Why is a coin toss often used when selecting venues for ball games?

When tossing a coin, there are two possible outcomes: one is heads, and the other is tails. There is an equal chance of heads and tails, so picking the field this way is fair.

Summarize

When you toss a coin, there is an equal chance of heads and tails. This situation is called equal probability in mathematics.

Is it possible to get a white ball from two boxes? Why?

Conclusion: No. Because there are no white balls in the two boxes, it is impossible to get the white ball from the two boxes.

In conclusion

1. Under certain conditions, the results of some events are predictable and certain; the results of some events are unpredictable and uncertain.

2. Certain events are described with "certain" and "impossible", and uncertain events are described with "possible".

3. Under certain conditions, the results of some events are predictable. There are several situations and there are several results.

practice

1. Find 4 kings from a deck of playing cards and place them on the table. Turn over any one of them. There are ( ) possibilities for drawing a heart.

2. Shuffle all the cards of the heart suit in a deck of playing cards, and randomly draw a card from it. There are ( ) possibilities for the drawn heart card.

3. Shuffle the twelve zodiac cards and place them on the table.

(1) Open one card at will, and the zodiac sign you open has ( ) possible results.

(2) Play together at the same table, turn over one card at a time, and see how many times you can turn out the card that is your own zodiac sign.

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File Info

Update Time: 2024-09-07

This template belongs to Mathematics courseware Hebei Education Edition Fifth Grade Mathematics Volume 1 industry PPT template

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