Teacher Prep

• Run off assignment log

• Run off animal pictures

• Find 100 meters of yarn.

Teacher Procedures:

• 1. Run off and laminate a set of the animal pictures. Cut them out and tape on a string loop to hang from each student’s neck. Better yet, have the students create the loop.

• 2. Give each student one card. Randomly hand the producer and consumer cards out so that they are spread evenly around the room.

• 3. Start with the sun and have that student hand the string to a producer. They must explain why they hand it to the student they pick. The student with the yarn must pass it to a student that depends on it and so on. Students should include every organism in the web.

• 4. When every organism is connected, ask the students to pull gently and take in the slack on the string. Explain that this is a food web and is much simpler than most in nature.

• 5. Ask one student to slacken the tension on their string to become “extinct”. Explain to the class what kind of environmental conditions are making it difficult for that animal to survive. Ask the students who feel the difference in the string to raise their hands. Count them and write it on the board next to the animals’ name that went extinct. Create two or three more scenarios and count the affected students. Be sure to include a carnivore, they have a surprising affect on food webs.

Lesson 26Making a food webGifted and Talented

8th GradeMr. PetersenBonneville Junior High

Self Starter * 40 Points * 10/5/2014 * Lesson 26Don’t shorten or abbreviate this assignment.

• Today’s Learning Objective: Students will build a food web and see how organisms are interconnected within the web.

• Essential Question: Describe mechanical energy.

• Answer: Energy of motion, this energy comes from the sun through a plant to an animal.

• Homework: Study for Friday’s quiz.

• Language Objective: Students will read orally.

Glossary List [ 1]

1. Food web-

Pass out new Assignment Log

Assignment Log * Portfolio 3

Assignment NumberAssignment Title

Lesson Number

1 Glossary 26

2 Making a Food Web Activity Sheet 26

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Pass out Assignment [ 2]

• Read the top.

• Read the Procedures:

Student Read• Title: Making a Food Web * For Gifted and Talented Students * 8th

Grade

• Introduction: Every living thing needs a source of energy. Producers get light energy from the sun, consumers get chemical energy from producers and decomposers get chemical energy from dead producers or consumers.

• We call all these feeding relationships a food web. You are part of a food web although people don’t often hunt or gather their own food anymore. Our food comes in grocery stores but, of course, at some point, it came from a plant or animal.

• Many scientists worry that food webs in nature have been seriously altered by people as we change the environment. In this activity you will make a food web and investigate how it changes when an organism becomes extinct.

Get Ready to do the Activity

• Materials Plant or animal card, string

•

• Procedures:

•

• 1. Place your card around your neck so that others can read it. Listen as your teacher begins the activity.

2. When the string comes to you, you must look around and see which organisms do not yet have a hold of the string. Pick one and describe how it depends on you. Hand them the string. Each person should hold the string so that it can slide in their hand. Hold your fingers so they can pull on the string but not grab it.

• 3. When the string has been around the room to everyone, gently pull the string tight.

4. Listen as your teacher describes the loss of one of the organisms. That person will loosen their hold on the string. If you can feel the string change its’ tension, raise your hand. After your teacher has counted the hands, write the number down on your data table. Continue to hold the string and repeat the process.

Teacher Directions

• What happens when something becomes extinct.

Self Starter * 40 Points * 10/5/2014 * Lesson 26Don’t shorten or abbreviate this assignment.

• Today’s Learning Objective: Students will build a food web and see how organisms are interconnected within the web.

• Essential Question: Describe mechanical energy.

• Answer: Energy of motion, this energy comes from the sun through a plant to an animal.

• Homework: Study for Friday’s quiz.

• Language Objective: Students will read orally.

Glossary List [ 1]

1. Food web-

Pass out new Assignment Log

Assignment Log * Portfolio 3

Assignment NumberAssignment Title

Lesson Number

1 Glossary 26

2 Making a Food Web Activity Sheet 26

3

4

5

6

7

8

9

10