Vocabulary and Learning
Textbook: 4th Grade Utah Science Standards
troposphere [ˈtrɒpəsfɪə(r)] n. 对流层
stratosphere [ˈstrætəsfɪə(r)] n. 平流层
mesosphere [ˈmezəsfɪə(r)] n. 中大气圈
thermosphere [ˈθɜ:məsfɪə(r)] n. 热层; 电离层
Music
Nursery Rhymes and Kids Songs | Baby Songs | Dave and Ava
National Geographic for Kids
Black Widow Spider 黑寡妇蜘蛛
National Geographic Kids
National Geographic
Black Widow Spider: Her Life Cycle and Her Enemies (1960)
Deadly Mates: Black Widow Spider | National Geographic
TYPE: Invertebrates
DIET: Carnivore
HABITAT: Grassland, Forest, Desert
AVERAGE LIFE SPAN IN THE WILD: 1 to 3 years
SIZE: 1.5 inches long; diameter of 0.25 inches
WEIGHT: 0.035 ounces
Origami Art
DIY How to make a Paper Bag / Basket / Box with an A4 sheet – Origami and Craft
