Unit 1: Life Science
Chapter 1: Living Things Need Energy |
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Lesson 1: Plants & Sunlight
Vocabulary
Text link to Living Things Need Energy Living Things Need Energy Quiz Game Photosynthesis Plant Part Game Root Factory Life Cycle of Plants Illuminating Photosynthesis Build your own bio-dome! Study Jams |
Summary
Main Idea Plants use the Sun’s energy to make food energy through a process called photosynthesis. Plants are important living things. Most plants have roots, stems, and leaves. (pp. 26–27) Green plants carry out photosynthesis to make food energy from sunlight, water, and carbon dioxide. (pp. 28–31) Plants make up most of the biomass in an environment. (p. 32) |
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Lesson 2: Food Chains
Vocabulary
Text Link to Food Chains Animal Diets Another Food Chain Game BBC Food Chain Game Producer Consumer De-composer Game All About Food Chains |
Summary
4 LS 2.a 4 LS 2.b 4 LS 2.c Food chains describe the flow of energy among living things in an environment. A complete food chain includes producers, consumers, and decomposers. A food chain is made of producers, consumers, and decomposers. (pp. 38–39) Consumers can be herbivores, carnivores, or omnivores. (pp. 40–43) Decomposers break down organisms that are no longer living. (pp. 44–45) |
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Lesson 3: Food Webs
Vocabulary
Text Link to Food Webs Study Jams Food Webs Food Chain Games Food Web Game Build a Food Web Check out this super cool National Geographic site about food webs! |
Summary
Main Idea 4 LS 2.b Food webs are food chains that are linked together. Food webs show how producers and consumers are related. A food web is a group of linked food chains. Each member of a food web can belong to more than one food chain. (pp. 52–53) Even small changes to a food web can affect the food web greatly. (pp. 54–57) An energy pyramid shows how much energy is passed to living things in a food web. (p. 58) |
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Lesson 4: Microorganisms
Vocabulary
Text Link to Microorganisms Pond Scum to Energy- Microorganisms Science Kids Microorganisms Quiz Your Noodle: Bacteria |
Sumamry
Main Idea: Main Idea 4 LS 3.d Microorganisms are living things too small to be seen with just our eyes. Microorganisms can be producers, herbivores, carnivores, or decomposers. Bacteria and protists are two examples of microorganisms. They can be helpful or harmful. (pp. 64–65) Microorganisms can be producers, consumers, or decomposers. (pp. 66–69) Microorganisms in your body help you stay healthy. You can help keep harmful bacteria out of your body. (p. 70) |
Chapter 2: Living Things and Their Environment
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Lesson 1: Ecosystems
Vocabulary
Text Link to Living Things and Their Environment Ecosystems Explained in Video |
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Lesson 2: Living Things Need Each Other
Vocabulary
Text Link to Living Things Need Eachother |
Summary:
Main Idea 4 LS 3.c Animals depend on plants for food and shelter. Plants depend on animals to spread seeds and pollinate flowers. Many plants depend on animals to help pollinate flowers. (pp. 98–99) Many plants depend on animals to spread seeds. (p. 100) |
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Lesson 3: Changes in the Ecosystem
Vocabulary
Text Link to Changes in the Ecosystem |
Summary:
Main Idea 4 LS 3.b When an ecosystem changes, plants and animals in that ecosystem can be harmed. Some organisms survive changes better than others. Natural events and human activities can cause ecosystems to change. (pp. 106–107) When ecosystems change, some organisms survive and others are harmed. (pp. 108–109) Humans can help protect ecosystems. (p. 110) |
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Lesson 4: Adaptations
Vocabulary
Text Link to Adaptations Study Jams Video 
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Summary:
Main Idea 4 LS 3.b An adaptation is a special feature that helps an organism survive in its environment. Adaptations are features that help living things survive in their environment. (pp. 116–117) Desert and Arctic plants and animals have adaptations that help them survive in their ecosystems. (pp. 118–121) Ocean plants and animals have adapted to life in this underwater environment. (p. 122) |