資源簡介

(共34張PPT)
Gravity-科學(xué)融合課
跨學(xué)科教學(xué)英語
教材內(nèi)容分析
課程探究邏輯：
通過實驗數(shù)據(jù)歸納科學(xué)規(guī)律
“What will happen to the dog and the ball ”
“Why do they fall to the ground ”
（感性認知）
（理性知識）
實驗匯報將數(shù)據(jù)與語言結(jié)合
生活場景：作業(yè)設(shè)計中的
“If Gravity Suddenly Disappeared”
天體重力：
（遷移與拓展）
學(xué)情分析（7年級）
學(xué)生已經(jīng)掌握了“力”的基本概念，比如推力、拉力，但對“重力”這種“非接觸力”理解起來有難度，很容易混淆“質(zhì)量”和“重量”這兩個概念；
知識基礎(chǔ)
學(xué)生能理解“force”“mass”等簡單科學(xué)術(shù)語，但像“gravity is a force pulling to Earth’s center”這樣的專業(yè)表達，還需要重點強化；
語言能力
7年級學(xué)生處于具體運算階段，抽象思維能力還在發(fā)展，適合通過實驗操作，比如測量物體重量，或者PPT演示等可視化工具來理解抽象概念。
認知特點
教學(xué)目標
學(xué)生通過閱讀文本，能用英語準確表述“gravity”“weight”“mass”等核心詞匯及其定義，理解重力是將物體拉向地球中心的力。
知識目標
01
學(xué)生能通過觀察圖片和實驗數(shù)據(jù)歸納重力的作用規(guī)律，通過實驗測量質(zhì)量并用公式計算物體重量，用英語完成“Weight vs. Mass”對比表格。
能力目標
02
通過用英語學(xué)習(xí)科學(xué)，激發(fā)學(xué)生對天體物理現(xiàn)象的探究興趣，培養(yǎng)語言應(yīng)用與科學(xué)思維的融合能力。
情感目標
03
教學(xué)方法
設(shè)計“質(zhì)量-重量測量”等實操活動，讓學(xué)生在動手過程中理解概念。
實驗教學(xué)法
利用PPT演示重力作用，比如羽毛與保齡球下落的實驗，幫助學(xué)生直觀感受。
多媒體輔助法
布置任務(wù)單，比如公式計算、表格填寫，強化學(xué)生的應(yīng)用能力。
任務(wù)型教學(xué)法
Gravity & Weight
Look and think.
What will happen to the dog and the ball
A. Fall to the ground
B. Fly into outer space
Think and answer.
Why do they fall to the ground
Because of gravity.
What is gravity
Gravity is a force that pulls everything toward the center of the Earth.
what
who
unit
cause
force
Newton
newton (N)
weight
Because of the gravity of the Earth, we have weight.
Differences
Weight = 600N
G
Name Characters
Gravity +
Weight
Direction
Value
Value
=600N
So the weight is the v______ of the gravity.
alue
Let’s weigh something.
Object Mass(g) Weight(N)
Its mass is ____ g, and its weight is _____ N.
10
1
2
3
4
20
20
50
0.1
0.2
0.2
0.5
= ×
W = m × g
Weight
Mass
g
g
The relationship between Weight and Mass is that
(g≈ N/kg)
10
What can we use to weigh objects
A scale.
Weight
A scale measures the w______ of an object, which is often displayed as m___ (in kilograms) for convenience.
eight
ass
What is the unit of the scale
It is usually kilograms (kg) or .
grams(g)
Weight/Gravity N
kg
Mass is the amount of matter
in an object.
Mass
What is mass
Let’s weigh something with a scale.
Object Mass(g)
orange
grape
candy
stone
The mass of the _______ is ____g.
orange
Weight(N)
The weight of the ________ is ____N.
On the Earth, W = m×g (g ≈ 10 N/kg)
The Moon
The Earth
600N
N
100 N
So the gravity on the Earth is ____ times that on the Moon.
six
Let’s
Compare
Which planet is better for jumping
Compare weights
Object Mass(g) Weight on the Earth Weight
on the Moon
orange
grape
candy
stone
=
Mass has the ________ value anywhere.
Weight has ___________ values according to places.
same
different
Gravity.xlsx
The two oranges hit the ground
at the _________ time.
Think : Does one fall faster
M1 _______ M2
≈
from the same height
same
Which one will hit the ground first
Think : Does one fall faster
The orange hits the ground first.
The grape hits the ground first.
Both hit the ground at the same time.
What about an orange and a grape Which one will hit the ground first
from the same height
Will they hit the ground at the same time
Yes. All of them hit the ground at the same time.
from the same height
Think : Does one fall faster
How about an orange and a feather
from the same height
Think : Does one fall faster
In the first case, the feathers fell to the ground at a slower rate than the bowling ball because of __________________.
from the same height
air resistance
Think : Does one fall faster
In a vacuum(真空), the feathers and the bowling ball fell to the ground
at the _______ time .
from the same height
same
On the Earth, when air resistance is ignored, any object falling from the _____________________ will hit the ground at the _________________.
We can conclude that:
same height
same time
from the same height
Summary Report
Gravity causes _______, and their unit is _________. Gravity has a _________ and a _______, but weight only has a _______. The unit of mass is ____________ or ________. On the Earth, we can calculate weight by the rule: _________. Without air, heavy and light things falling from the ____________ will land at the ____________.
weight
Newton
direction
value
value
kilogram(kg)
gram(g)
W=m×g
same height
same time
Homework:Written Homework:Write a short story describing how life scenes would change.Title: If Gravity Suddenly DisappearedExploration Homework:Look up information about the gravity of other planets, make a simple comparison with Earth's gravity, and share it in the next class.以“Gravity”為核心概念，通過“現(xiàn)象觀察---科學(xué)建模---跨學(xué)科應(yīng)用”的探究鏈設(shè)計教學(xué)。
國際課程理念融合
采用“英語術(shù)語輸入+中文思維輔助”的漸進式雙語模式。
雙語教學(xué)創(chuàng)新
引入國際通用的科學(xué)探究方法，如“控制變量法”（對比真空與非真空下落）、“數(shù)據(jù)可視化”（表格），使用國際單位制規(guī)范測量。
實驗設(shè)計國際化
教學(xué)特色
通過PPT動態(tài)演示（如月球重力對比）和實物實驗（彈簧秤測量），有效突破“質(zhì)量不變而重量可變”的認知難點，85%的學(xué)生能正確區(qū)分“mass”與“weight”的英語表述，并理解其物理含義上的區(qū)別。
成功之處
教學(xué)反思

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