英语人教版四年级上册Magnet课件

1、magnet,Different types of magnet,bar magnet,ring magnet,U-shaped magnet,Where can we find the magnet in our daily life?,Brain storm:,We can find the magnet in_.,Experiment 1: What can the magnet attract?,Materials: magnets plastic rulers, erasers, paper, iron paper clips, 1 yuan coin, 10-cent coin,

2、5-cent coin,吸引,(猜想) Suppose: Can magnet attract them?,Experiment,Step 1 Use the magnet to test every material at least 3 times.,Step 2 Fill in the form.,Step 3 share your ideas : Magnet can attract _. Magnet cannot attract _.,Report,After you finish the experiment, put away all the things. 实验后，收拾整理好

3、所有物品。 Time control: 5 minutes.,Magnet can attract _. Magnet cannot attract _.,Magnet cannot attract _.,5-cent coins are made of aluminum magnesium alloy. 5分钱硬币是镁铝合金制作的。,Paper clips,1 yuan coins and 10-cent coins are made of iron.,nail,Here are the things made of iron.,wok,lock,fence,Magnet can attra

4、ct iron.,Suppose: Can the magnet attract iron with something in between? 磁铁能隔着物体吸铁吗？,Experiment 2: Can the magnet attract iron with something in between? 磁铁能隔着物体吸铁吗？,Materials: a piece of paper a book a piece of cloth a plastic bag,Experiment,Yes, it can.,Experiment 2: Can the magnet attract iron with something in between? 磁铁能隔着物体吸铁吗？,How do we use magnets in daily life?,In the classroom, what else can the magnet attract?,the South pole,the North pole,Next lesson, we are going to learn:,Experimen