吕文丹——Shadows.doc

教学基本信息
学科
双语科学
执教
吕文丹
年级
二年级
团队研修主题
Observe & Detect
课题
Shadow(II)
教学背景分析
Content: In lesson 3, students continue their exploration of shadows to find out how a shadow’s size is affected by an object’s distance from a light source. Finally, students further explore and consolidate their learning by staging a shadow-puppet show.
Students’ situation: Students should now have some basic ideas about the relationship between a source of light and a shadow. The activities in this lesson encourage structured exploration, with opportunities for students to talk about light and shadows amongst themselves.
Using methods: group discussion, experimental method
Preparation for this lesson: a torch (prepare by students)
学习目标
1. Predict the changes to the size and shape of shadows when a light is be moved.
2. Understand how shadow puppet work.
学习重难点
Understand the changes of the size and shape of shadows
学习过程
1. Review
Sing the Song <The Shadow Song>
2. Stimulus activity
Play a game. “Can you make shadow animals with your hands?” “Can you guess what it is?” Use “Guess what is it?” “It’s a ……”
3. Teach key words
Move
Shadow
4. Activity 1
Work in groups. Do an experiment. We need a torch, an object (pencil case or a small bear), a piece of card or wall. Darken the room. Move the torch near or far from the objects and observe the size of the shadow of the objects. Make a record. Can the shadow become bigger/ smaller? Draw down what your findings. Observe the light of the laser pointer. And find out how does light travel.

5. Let’s Practice (activity book P13)
Which one is correct?
6. Now I know……
I can make a shadow big. I can make the shadow small.
7. Let’s practice (homework for today)
Cut down some shapes. Make shadows and tell a story.

板书设计
What is it?
It’s a _________.
作业设计
1. Read the text.
2. Make a story by using hand shadows.