第六单元

U6、Fast logistics transportation —— solve problems.

六、快捷的物流运输——解决问题

Motorcycles travel an average of nine hundred meters per minute.

摩托车平均每分钟行驶900米。

Large trucks travel an average of  sixty-five kilometers per hour.

大货车平均每小时行驶65千米。

The minivan runs an average of  seventy-five kilometers per hour.

小货车平均每小时行驶75千米。

Motorcycles from the station after eight minutes to the logistics center.

摩托车从车站出发经过8分钟到达物流中心。

The two trucks set out from the east and west at the same time, opposite each other, and met in the logistics center after four hours.

两辆货车分别从东、西两城同时出发，相向而行，经过4小时在物流中心相遇。

What questions can you ask?

你能提出什么问题?

Cooperative exploration

合作探索

How many meters is the station and the logistics center apart?

车站与物流中心相距多少米?

Number of meters per minute x travel time = distance between station and logistics center

每分钟行驶的米数x行驶时间=车站与物流中心的距离

Nine hundred times four is seven thousand two hundred

900X 8=7200(米)

How many kilometers is the distance between Xicheng and logistics center?

西城与物流中心相距多少千米?

Number of kilometers per hour x travel time = the distance between Xicheng and logistics center

每小时行驶的千米数x行驶时间=西城与物流中心的距离

Like this ," the number of meters per minute "and" the number of kilometers per hour "are called speeds. "Station, West City and the logistics center distance of the number of meters" called distance. "Travel 900m per minute" can be written as "900m per minute ".

像这样，“每分钟行驶的米数”和“每小时行驶的千米数”叫作速度。“车站、西城与物流中心相距的米数”叫作路程。“每分钟行驶900 米”可以写作“900米/分”读作“900米每分”。

Can you talk about the relationship between speed, time and distance?

你能说说速度、时间、路程之间的关系吗?

Motorcycles travel an average of 900 meters per minute and 7200 meters in 8 minutes.

摩托车平均每分钟行驶900米，8分钟能行驶7200米。

nine hundred m/min x eight=seven thousand two hundred m

900米/分x 8分=7200米

Speed x time = distance

速度x时间=路程

Motorcycles travel 7200 meters in 8 minutes, with an average of 900 meters per minute.

摩托车8分钟行驶7200米，平均每分钟行驶900米。

seven thousand two hundred m ÷ eight=nine hundred m/m

7200米÷8分=900米/分

Distance ÷ time = speed

路程÷时间=速度

The distance from the station to the logistics center is 7200 meters. The average motorcycle is 900 meters per minute and takes 8 minutes to arrive.

从车站到物流中心的距离是7200米，摩托车平均每分钟行驶900米， 需要8分钟到达。

seven thousand two hundred m ÷nine hundred m = eight min

7200米÷900米/分=8分

Distance ÷ speed = time

路程÷速度=时间

How many kilometers is the distance between the and west?

东、西两城相距多少千米?

How many kilometers is the distance between east and west, that is, the total distance two cars.

求东、西两城相距多少千米，就是求两辆车行驶的总路程。

Let's demonstrate.

我们演示一下。

You can also draw line segments to sort out the conditions and problems.

还可以画线段图整理条件和问题。

First ask for each car 4 hours of road view, and then...

先求每辆车4小时行驶的路望程，再求.....

sixty-five by four and seventy-five by four

65X 4+ 75x4

equals two hundred and sixty and three hundred

=260 + 300

equal to five hundred sixty

=560(千米)

A: the distance between the two cities is 560 km.

答:东、西两城相距560千米。

Ask for two cars for an hour and then...

先求两辆车1小时共行驶的路程，再求....

( sixty-five plus seventy-five) times four

(65+75)X4

equals one hundred forty times four

=140x 4

equal to five hundred sixty

=560 (千米)

A: the distance between the two cities is 560 km.

答:东、西两城相距560千米。