快乐小子的双语工程 Day89

Eric妈妈

万思乐学 V-learn 小西妈双语工程1901期210Eric打卡。 Day89 1a：London bridge汉语（一）：找妈妈

一、Listening：

古诗：本周新学《无题》（李清照）

英文：1a，Pepper pig，Little critter，海尼曼

中文：汉语（一）

二、晨读：汉语（一）找妈妈

三、字母学习：学习H，I

四、扫雷：牛津树二3本

五、数学：摩比豆

六、Handcrafts：Make a small windmill.

Prepare a piece of paper.

Tear the paper into three thin strips of the same width.

Fold all three pieces of paper in half.

Put the second note on the first.

Put the third note on the second note, and put the end of the third note into the cover of the first note.

When three pieces of paper are tightened at the same time, it becomes a simple three leaf small windmill.

七、Look, what's the difference when these things fall from high?

prepare：some feathers

a small windmill.

leaves

a little ball and a big ball.

M：When the windmill fell down from high. What can you see?

B：It turned fast.

feathers：They fell very slow.

leaves：they fell faster than feathers.

a big ball：It fell down the floor quickly with big sound.

a little ball：It fell down the floor quickly with small sound.

八、

M：Can you guess, when these two balls fall from the top at the same time, which one will fall faster?

B：The small ball.

M：Why?

B：Because it is small and it is light.

M：So you think it falls faster than the big one?

B：Yes.

M：Oh that's so strange.let's do an experiment to see which one is faster.

（do the experiment）

M：Which one is faster?

B：The small one.（固执的娃）

M：Let's watch a video.

M：Hundreds of years ago, a scientist named Galileo did the same experiment. Let's take a look.

What are the characteristics of this tower?

B：It's tilted

M：So its name is The Leaning Tower of Pisa. Look at a big ball and a small ball. At the same time, it falls off the tower. Who will fall faster?

B：they fell down at the same time.

M：Yes.

九、

M：Can you guess, when a ball and a feather fall from the top at the same time, who will fall faster?

B：The ball

M：let's do an experiment to see which one is faster.

……

M：which one is faster?

B：The ball.

Why do feathers fall more slowly?

Because of the air resistance, the air resistance is like a big hand, holding you up and not letting you fall. The feather is light, so the resistance should be large, the ball is heavy, so the resistance should be small.

If there is no air, no air resistance, will feathers fall more slowly?

Scientists have done this experiment. Let's take a look.

十、What is the effect of air resistance?

one is parachute.

Parachute is a tool that uses air resistance to make people or objects land safely from the air to the ground. It is widely used in aerospace personnel life-saving, Airborne Combat and training, parachute jumping, airdrop materials, recovery of aircraft and equipment.

Another one is deceleration parachute

Deceleration parachute, also known as drag parachute, is an umbrella like tool used to reduce the sliding speed of an aircraft when landing.

十一、Let's make a parachute

1、Cut the plastic bag into a square and use scissors to cut a small hole near each corner.

2、Take four thin wires of the same length and tie them to the holes on the four corners of the plastic bag.

3、Put the four strings together and make a knot. The parachute is made.

4、Try to tie the plasticine on the line and fly in the open space. The higher the parachute, the better, or from a high place.

又是一个有意义的一天，做小风车、降落伞，玩小球实验，看视频，增长了很多知识，特别是真空中小球和羽毛的实验还有减速伞，让小宝觉得特别有意思！