Unit 7 How do things change? Period5（课件）-2025-2026学年沪教版英语四年级下册

Period 5 What is our world made of? How do things change? Think and answer. What is our world made of? Everything in our world is a solid, liquid or gas. Everything in our world is a solid, liquid or gas. Ice and metal are solids. Water and milk are liquids. Air and steam are gases. But things change. Read and discuss. What are solids, liquids and gases? 3 Watch and check. Solids, liquids and gases 学生观看视频，初步感知语篇内容并回答问题 4 Listen and follow. State Things Solid Liquid Gas ice metal Everything in our world is a solid, liquid or gas. Ice and metal are solids. Water and milk are liquids. Air and steam are gases. But things change. metal Fill in the blanks. water milk air steam ... and ... are ... (solids/liquids/gases) Share and say. State Things Solid Liquid Gas ice metal water milk air steam Read and discuss. Water can change into different states. What can it become? 小组内初读故事，思考问题，并讨论 7 The ice is a solid. Now it’s melting. It’s changing into a liquid. Listen, read and answer. Is the ice a solid, a liquid or a gas? Look at the ice. What is happening? What is the ice changing into? Read and match. The water is a liquid. Now it’s freezing. It’s changing into a solid. a. b. a b The water is a liquid. Now it’s boiling. It’s changing into a gas. 9 Look and answer. Is the water a solid, a liquid or a gas? Look at the water. What is happening? What is the water changing into? freezing The water is a liquid. Now it’s freezing. It’s changing into a solid. Listen and follow. Look and choose. Now it’s ___________. a. boiling b. freezing The water is a ________. a. solid b. liquid c. gas It’s changing into a ______. a. solid b. liquid c. gas b a c 12 The water is a liquid. Now it’s boiling. It’s changing into a gas. Listen and follow. Look and say. What can water change into? Everything in our world is a solid, liquid or gas. Many things can change from one state to another. Water can change into a solid or a gas. Listen and follow. What is our world made of? Everything in our world is a solid, liquid or gas. Ice and metal are solids. Water and milk are liquids. Air and steam are gases. But things change. The ice is a solid. Now it’s melting. It’s changing into a liquid. The water is a liquid. Now it’s freezing. It’s changing into a solid. The water is a liquid. Now it’s boiling. It’s changing into a gas. Think and discuss. What things around us can change? How do they change? When chocolate melts, it changes into a liquid. When we put the fruit juice in the freezer, it turns into a lolly. … When we mix the sugar and cream, it becomes a mixture. 16 When does water change into a gas? When does it change into a solid? Water changes into a gas when it is very hot/when it boils. It changes into a solid when it is very cold/when it freezes. Think and fill. Cause Effect 1. The water boils. a. It changes into . 2. The water freezes. b. It changes into ________. 3. The ice melts. c. It changes into ________. a gas a solid a liquid melt 18 Share and say. Water can change. It changes into ... when ... Cause Effect 1. Water boils. a. It changes into . 2. Water freezes. b. It changes into ________. 3. Ice melts. c. It changes into ________. a gas a solid a liquid melt 19 1. 朗读Unit 7 P70 Extend的课文。 2. 复述课文。 Assignments: 5 7 Blues 17946.064 Blues 7758.39 Blues 7967.3706 Blues 8698.793 Blues 47202.797 $