跟美国学生同步学科学-2

01 Animals of North America 02 Animal and Plants Structures. 03 The Life Cycle of a Frog 04 Real Life Science 05 Review (Lessons 1− 4) 06 Soil. 07 Creatures that Use Soil 08 Rainforests 09 Various Kinds of Plants 10 Review (Lessons 6−9) 11 Friction 12 Magnets 13 Life Cycles of Plants 14 Penguins 15 Review Lessons (Lessons 11− 14). 16 Dinosaurs 17 The Loch Ness Monster 18 Amazing Guide Dogs. 19 Hibernation. 20 Review (Lessons 16−19). 21 Camouflage 22 Do Fish Sleep. 23 Are Sasquatches Real? 24 We All Need Food 25 Review (Lessons 21− 24). 26 How Things Move 27 Limited Resources 28 Microscopes 29 Solids, Liquids, and Gases 30 Review (Lessons 26−29) 31 The Rock Cycle. 32 Many Ways to Measure. 33 Step by Step Instructions 34 The Scientific Method 35 Review (Lessons 31− 34). 36 Land Usage. 37 What Is Gravity?. 38 Pitch and Volume. 39 Plant Life Cycles 40 Review (Lessons 36−39) 41 Push and Pull. 42 Why Did the Dinosaurs Die? 43 A Worm’s Life 44 Fish with Lights 45 Review (Lessons 41− 44) 46 Phases of the Moon 47 Reflections 48 Cats and Water 49 Gorillas 50 Review (Lessons 46−49)