CLASSIFYING+AND+COMPARING+WORMS

> What do you think of when someone mentions the word worm? Perhaps the first thing that comes to your mind is the average garden-variety earthworm. After all, a worm is a worm, right? Actually, there are three different types of worms—flatworms, roundworms, and segmented worms. Each type belongs to a different classification in the animal kingdom. How are each of these worms classified? What are the characteristics of each these invertebrates? How are they like one another? How are they different from one another? In this WebQuest, you will find the answers to these questions by researching the different types of worms. > [|Top] > Your job in this WebQuest is to learn about the different phyla of worms. You'll investigate flatworms, roundworms, and segmented worms, and describe and compare the characteristics of each type of animal. Once you've conducted some research to increase your knowledge of worms, you'll complete the //Worm Comparison// worksheet to record the similarities and differences among these three types of invertebrates. You'll also find a specific example of each of these three types of invertebrates and describe its characteristics. > [|Top] > 2 days to answer the set of questions and complete the Worm Comparison worksheet > [|Top] > First, read through the following set of questions before you begin your Internet research. As you explore each site, look for answer to the questions. > **//Questions about Classifying and Comparing Worms//** > [|Worm Comparison worksheet] PDF (15K) > (Requires [|Adobe Acrobat Reader®]) [|Top] Look at the Web sites provided here to find the information that will help you answer questions about different types of worms, and to gather information to use as you complete the //Worm Comparison// worksheet. >> This page, from the University of Michigan, describes roundworms. >> This page, from the University of Michigan, describes segmented worms. >> Flatworms, Roundworms, and Segmented Worms >> Flat, Round, and Segmented Worms Next, use the //Worm Comparison// worksheet to compare the similarities and differences among flatworms, roundworms, and segmented worms. You will use the worksheet to collect information about the three different phyla of worms, including descriptions of three species, one for each of the types of worms you’ve investigated. Review the rubric to understand how your worksheet will be evaluated. >>> [|Top] > In the process of completing this WebQuest, you've learned about different types of worms. You have discovered how flatworms, roundworms, and segmented worms are classified. You have investigated the characteristics of each type of worm as well as compared these three invertebrates for similarities and differences. You have completed the //Worm Comparison// worksheet to relate flatworms, roundworms, and segmented worms. You also described a specific example of each type of worm. > [|Top]
 * 3Q6GtAn Internet WebQuest4****CLASSIFYING AND COMPARING WORMS**
 * Introduction**
 * Task**
 * Time**
 * Process**
 * 1) How are flatworms classified, and what are their characteristics?
 * 2) How are roundworms classified, and what are their characteristics?
 * 3) How are segmented worms classified, and what are their characteristics?
 * 4) In what ways are flatworms, roundworms, and segmented worms alike?
 * 5) In what ways are flatworms, roundworms, and segmented worms different?
 * Resources**
 * [|**http://animaldiversity.ummz.umich.edu/platyhelminthes.html**>>]This page, from the University of Michigan, describes flatworms.
 * [|**http://animaldiversity.ummz.umich.edu/nematoda.html**]
 * **[|http://animaldiversity.ummz.umich.edu/annelida.html]**
 * **[|http://www.infoplease.com/dk/science/encyclopedia/worms.html]**
 * **[|http://staff.tuhsd.k12.az.us/gfoster/standard/bworm.htm]**
 * Conclusion**

> In this WebQuest, students will conduct Internet research on worms. They also will answer questions about the different classifications of worms, based on their Internet research. The will investigate similarities and differences among these three phyla of invertebrate and summarize the information they collected by completing the //Worm Comparison// worksheet. Other information on the worksheet will also allow students to describe a species for each phylum. > [|Top] > While students are doing their Internet research, they will answer the set of questions given. Each Web site has some of the answers to the questions, but several of the questions may require information from two or more of the web sites. Students should be able to compile information to answer the questions as they read through each Web site. Students should be encouraged to explore other Web sites beyond the prompts given. > As students research the answers to the questions, they will also gather information to use as they complete the //Worm Comparison// worksheet. Students will use the worksheet to compare the three phyla of worms, describe their similarities and differences, and identify a specific example of each type of worm. > **Objectives** > [|Top] > Students will use the Internet links provided to find out all about the different classifications of worms. By investigating flatworms, roundworms, and segmented worms, they will collect information in order to describe each of these phyla of invertebrates. They will compare and contrast these three types of animals Further research will allow students to describe flatworms, roundworms, and segmented worms in more detail. Students will also identify and describe a specific example of each of these types of worms. > [|Top] > 2 days to answer the set of questions and complete the //Worm Comparison// worksheet > [|Top] > As students progress through the list of Web sites, you may help them focus on what they need to know to answer the questions. Several of the Web sites have links to other Web sites with relevant information. If time allows, you may want to allow students to further explore subjects related to the three phyla of worms. **Always supervise students carefully as they search the Internet.** > Students will then continue with their Internet research to compare flatworms, roundworms, and segmented worms by completing the //Worm Comparison// worksheet. > They should use their research to find more information in order to describe how these three types of worms are similar and how they are different. Students will include information about an example species from each phylum. > Have students review the rubric to understand how their final product will be evaluated. > Encourage students to share their worksheets with classmates to compare the different species of flatworms, roundworms, and segmented worms they chose to investigate. > [|Worm Comparison worksheet] PDF (18K) > (Requires [|Adobe Acrobat Reader®]) [|Top] > Worm Comparison Worksheet Rubric > Points* || Self-//** > **//Assessment//** || **//Teacher//** > **//Assessment//** || > || Complete all table entries for flatworms. || 10 || || || > || Complete all table entries for roundworms. || 10 || || || > || Complete all table entries for segmented worms. || 10 || || || > || Include at least one specific example of a species for each worm phylum. || 10 || || || > || Write a description for each example species. Include a minimum of three facts in the description for each species. || 10 || || || > **Possible Answers to Questions about Worms – Student answers will vary** > **Evaluating the Worksheet** > Use the evaluation rubric or other means to assess each student’s //Worm Comparison// worksheet. Evaluation of the worksheet should include self-assessment and teacher assessment. Students may want to base part of their self-assessment on how they have increased their awareness of the similarities and differences between the three phyla of invertebrates. [|Top] > Using information gathered from the Internet, students should be able to answer the questions about flatworms, roundworms, and segmented worms. Student should be able to classify each type of worm and describe its characteristics. Students should also be able to describe the similarities and differences among the three invertebrates. After completing their research, students should apply their learning to complete the Worm Comparison worksheet, where students continue to describe flatworms, roundworms, and segmented worms, as well as identify and describe one species from phylum Platyhelminthes, phylum Nematoda, and phylum Annelida. > [|Top] >
 * WebQuest Teacher Page**
 * An Internet WebQuest**
 * CLASSIFYING AND COMPARING WORMS**
 * Introduction**
 * Task**
 * **Classify** flatworms, roundworms, and segmented worms
 * **Describe** the characteristics of flatworms, roundworms, and segmented worms
 * **Compare** and contrast flatworms, roundworms, and segmented worms
 * **Identify** and describe a specific example of phylum Platyhelminthes, phylum Nematoda, and phylum Annelida.
 * Resources**
 * Time**
 * Process**
 * Evaluation**
 * **//Worm Comparison Worksheet Rubric//** || **//Possible
 * You may assign 10 points to each of the 5 questions for a total of 50 possible points. Possible answers to the questions are given below. //You may rate the answer to each question by the following scale: Excellent – 9-10 points; Very Good – 7-8 points; Good – 5-6 points; Satisfactory – 3-4 points; Poor – 1-2 points; and Unsatisfactory – 0 points.//
 * 1) Flatworms are part of the phylum Platyhelminthes. They are unsegmented worms and do not have a coelom. Flatworms do not have a respiratory system or a circulatory system.
 * 2) Roundworms are part of the phylum Nematoda. They are bilaterally symmetrical invertebrates. Roundworms have a simple body plan.
 * 3) Segmented worms are part of the phylum Annelida. Segmented worms have a true coelom. They have a circulatory system and a digestive system.
 * 4) Flatworms, roundworms, and segmented worms are all invertebrates. Some species of each type of worm are free-living, meaning they are not dependent on another organism for food.
 * 5) Segmented worms are the most complex animals of these three invertebrates. Segmented worms have a true coelom. Flatworms do not have a coelom, and roundworms have a pseudocoelom.
 * Conclusion**