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Learn about autotrophs, heterotrophs, and decomposers, and understand the concepts of food webs and food chains. This program is designed for 4th-5th graders in a classroom setting.
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How Food Works in Nature By: Shelby Holloway
Main Menu Autotrophs, Heterotrophs, and Decomposers Food Web and Food Chain Consumers Teachers Only Quiz Review
Teachers only Learning Environment Target Audience Instructional Objectives Menu
Target Audience • Grades: 4th-5th • Consider the fact that this is the first time students are exposed to these terms. • Simple explanations, interactive so students will stay focused. Menu
Learning Environment • Classroom setting • Class size 20-25 students • Students in groups of 5 • Desks arranged so that each group is together Menu
Instructional Objectives After completion of this program students will be knowledgeable over how food works in nature and will complete the quiz portion of the program with 100%. Menu
Consumers Carnivore Herbivore Omnivore Activity All animals eat different types of food. Above are the three classifications that animals are put in depending on what they eat. Menu
Herbivore • Herbivores are animals that eat only plant material. • Examples: Menu
Carnivore • Carnivores are animals that eat only other animals. • Examples: Menu
Omnivore • Omnivores are animals that eat both plant and animal materials. • Examples: Menu
Activity Time! • Teacher pass out 5-10 pictures of animals to groups of about 5 students. • Each group should have the same pictures of animals. • Tell the students to label the pictures within their group to the corresponding consumer type. • Teacher should go over correct answers after students are finished labeling Menu
Food Web vs. Food Chain Food Web Videos Food Chain Menu
Food Chain Food Chain: A series of organisms in which one organism obtains energy from another. • Food chains only show one specific path, one organism consuming another. Menu
Food Web Food Web: A series of connected food chains. • A food web is much larger than a food chain because it contains numerous food chains within it. Menu
Videos Menu
What kind of Organism? Autotrophs Decomposers Heterotrophs Menu
Autotrophs • Self-feeding organisms, they are able to produce their own food using nonliving sources. Examples: Plants, Bacteria, Flowers, Moss Menu
Heterotrophs • Other-feeding organisms, they must eat other organisms to survive. Examples: Lions, Birds, Cows, Dogs Menu
Decomposers • Organisms that consume dead or waste materials. Examples: Fungus, Dung Flies, Wood Lice Menu
Review Students number paper 1-6 and try to answer the following questions correctly. 1.What is an omnivore? 2. What is an autotroph? 3. Which is larger a food chain or food web? 4. What is a herbivore? 5. What do decomposers consume? 6. What do carnivores consume? Menu
Answer key 1.Omnivores are animal and plant consumers. 2. Autotrophs are organisms that produce their own food. 3. A food web is larger than a food chain. 4. Herbivores are animals that consume plant materials. 5. Decomposers consume dead or waste material. 6. Omnivores consume other animals for food. Menu
Quiz Time! From the following questions, choose the correct answer and write it on a piece of paper. The paper will be collected so you can receive a participation grade. Good luck! Begin
1. Animals that only plant materials are known as? a. Omnivore b. Herbivore c. Carnivore
Try Again! This is not the correct answer. Go back and try again.
2. Organisms that consume only other organisms for food are? a. Omnivore b. Herbivore c. Carnivore
Incorrect! Herbivore animals eat only plant material. Go back and try again.
Incorrect! Omnivore animals consume both plant and other animals for energy Try again!
3. True/False Food chains are larger than food webs. True False
Good Thinking! Food chains are smaller than food webs.
Try again! Remember many food chains make up a food web.
4. From the given food chains, choose the correct sequence Eagle Snake Mouse Snake Eagle Mouse
Incorrect Hint: A mouse would be at the bottom of the food chain. Try Again!
Great Job!!! You chose the correct sequence in the food chain! Eagle Snake Mouse
Sorry, Try Again! Herbivores eat foods such as grass and plants.
Correct!! Yay!!!
6. Organisms that consume both plant and animal materials are what? a. Omnivore b. Herbivore c. Carnivore
Incorrect! Carnivores consume only other animals for food.
Try Again! Herbivores consume only plant materials for food.
7. Choose the letter that corresponds with decomposers. a. Decomposers eat food they produce. b. Decomposers consume dead or waste materials. c. Decomposers consume other living things.
Incorrect! Hint: Decomposers break down waste materials. Go back and try again.
8. What type of consumer is a tiger? a. Omnivore b. Herbivore c. Carnivore
Try Again! Hint: Tigers eat meat.
9. True/ False Autotrophs are organisms that are capable of producing their own food using nonliving sources. True False