视频目录： 6.1 怎样认识力 6.2 怎样测量和表示力 6.3 重力 6.4 探究滑轮摩擦力的大小 6.5 探究杠杆的平衡条件 6.6 探究滑轮的作用 7.1 怎样描述运动 7.2 怎样比较运动的快慢 7.3 探究物体不受力时怎样运动 7.4 物体受力时怎样运动 8.1 认识压强 8.2 研究液体的压强 8.3 大气压与人类生活 9.1 认识浮力 9.2 探究浮力的大小 9.3 研究物体的沉浮条件 9.4... [阅读全文]

视频目录： 1.1 希望你喜爱物理 1.2 测量长度和时间 1.3 长度和时间测量的应用 1.4 尝试科学探究 2.1 我们怎样听见声音 2.2 我们怎样区分声音 2.3 我们怎样区分声音（续）（第1课时） 2.3 我们怎样区分声音（续）（第2课时） 2.4 让声音为人类服务 3.1 光世界巡行（第1课时） 3.1 光世界巡行（第2课时） 3.2 探究光的反射规律 3.3 探究平面镜成像特点... [阅读全文]

目录 UNIT 1 Nature in the balance-Section A UNIT 1 Nature in the balance-Section B UNIT 1 Nature in the balance-Section C UNIT 2 Natural disasters-Section A UNIT 2 Natural disasters-Section B UNIT 2 Natural disasters-Section C UNIT 3 The world online-Section A UNIT 3 The world online-Section B UNIT 3 The world online-Section... [阅读全文]

目录 Unit 1 Light, camera, action! (1)(上) Unit 1 Light, camera, action! (1)(下) Unit 1 Light, camera, action! (2)(上) Unit 1 Light, camera, action! (2)(下) Unit 1 Light, camera, action! (3)(上) Unit 1 Light, camera, action! (3)(下) Unit 1 Light, camera, action! (4)(上) Unit 1 Light, camera, action! (4)(下) Unit 2 Be sporty,... [阅读全文]

目录 UNIT 1 Back to school Section A(1) UNIT 1 Back to school Section A(2) UNIT 1 Back to school Section B(1) UNIT 1 Back to school Section B(2) UNIT 1 Back to school Section C UNIT 1 Back to school Section D UNTI 2 Let’s talk teens Section A(1) UNTI 2 Let’s talk teens Section A(2) UNTI 2 Let’s talk teens S... [阅读全文]

视频目录 Unit1 Growing up (1)上 Unit1 Growing up (1)下 Unit1 Growing up (2)上 Unit1 Growing up (2)下 Unit2 Improving yourself (1)上 Unit2 Improving yourself (1)下 Unit2 Improving yourself (2)上 Unit2 Improving yourself (2)下 Unit3 Times change!(1) Unit3 Times change!(2) Unit4 Breaking boundaries (1)上 Unit4 Breaking boundari... [阅读全文]

视频目录 UNIT 1 Laugh out loud Section A UNIT 1 Laugh out loud Section B UNIT 1 Laugh out loud Section C UNIT 2 Onwards and upwards Section A UNIT 2 Onwards and upwards Section B UNIT 2 Onwards and upwards Section C UNIT 3 Faster,higher,stronger Section A UNIT 3 Faster,higher,stronger Section B UNIT 3 Faster,higher,stronger ... [阅读全文]

目录 UNIT 1 FESTIVALS AND CELEBRATIONS(1) UNIT 1 FESTIVALS AND CELEBRATIONS(2) UNIT 1 FESTIVALS AND CELEBRATIONS(3)上 UNIT 1 FESTIVALS AND CELEBRATIONS(3)下 UNIT 1 FESTIVALS AND CELEBRATIONS-语法&WORKBOOK UNIT 2 MORALS AND VIRTUES(1) UNIT 2 MORALS AND VIRTUES(2) UNIT 2 MORALS AND VIRTUES(3) UNIT 2 MORALS AND VIRTUES(4) &... [阅读全文]

目录 UNIT 1 CULTURAL HERITAGE(1)_1 UNIT 1 CULTURAL HERITAGE(1)_2 UNIT 1 CULTURAL HERITAGE(2) UNIT 2 WILDLIFE PROTECTION(1) UNIT 2 WILDLIFE PROTECTION(2) UNIT 3 THE INTERNET(1)-1 UNIT 3 THE INTERNET(1)-2 UNIT 3 THE INTERNET(2)-1 UNIT 3 THE INTERNET(2)-2 UNIT 4 HISTORY AND TRADITIONS(1) UNIT 4 HISTORY AND TRADITIONS(2) UNIT 5 ... [阅读全文]

目录 UNIT 1 TEENAGE LIFE(1) UNIT 1 TEENAGE LIFE(2) UNIT 2 TRAVELLING AROUND(1)(第1课时) UNIT 2 TRAVELLING AROUND(1)(第2课时) UNIT 2 TRAVELLING AROUND(2) UNIT 3 SPORTS AND FITNESS(1) UNIT 3 SPORTS AND FITNESS(2) UNIT 4 NATURAL DISASTERS(1) UNIT 4 NATURAL DISASTERS(2)(第1课时) UNIT 4 NATURAL DISASTERS(2)(第2课时) UNIT 5 LANGUA... [阅读全文]