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Frog dissection questions answers3/20/2023 ![]() Need to be removed to see the other structures. Yellow color, if you have a particularly fat frog, these fat bodies may Students, to answer the questions, you simply need to read carefully, the answers are in the instructions.Bodies -Spaghetti shaped structures that have a bright orange or None of the answers are that difficult, and most biology teachers (or science teachers) should have little difficulty answering the questions on the guide. This is simply a way for me to limit access to students, and proceeds help with hosting costs for You can purchase a key from Teachers Pay Teachers, for $1.50 which includes answers to questions in the lab guide and labeled diagrams. For that reason, I do not share keys on biologycorner. Students are free to look up information on the web, but I do not want them to take a shortcut by just coping answers from a posted key. Key to Lab Handout Questions and Labeling Finally, students get a lab test over the frog where frogs have been set up and tagged students move from station to station to identify the structures that have been pinned. I usually grade the questions and labelings from the Frog Dissection Handout and also give them a paricipation grade based on how well they did the lab, such as cutting the frog, cleaning up, and working well with others. ![]() Grading - the dissection can be difficult to grade. (See also: Flinn Scientific Safety Contract) You may also consider have students sign a safety contract prior to doing labs. It sounds harsh, but if you're willing to give a freshmen scalpels, then be prepared to be very stern to ensure the safety of all of your students. I typically end up removing a student from the class the first day, this student must do the alternate assignment in the hall. Address these issues before you start the lab and make clear that horseplay will not be tolerated. When you're helping one student, another may be throwing frog guts at their neighbors. Your district may have additional rules about dissections and safety (some may require parental permission.)Ĭlassroom Management - this can be a stressful time for teachers because students can get very excited and forget classroom rules. Students should wash hands even if they wore gloves. Latex gloves are preferred, but not entirely necessary. If this happens, use eyewash and liberally flush eye with water. Safety Considerations - students must wear safety goggles, frogs will sometimes spray fluid when you cut them and this fluid can be painful if it enters the eyes. Younger students may need more help than older students. Remember that dissection is a learning process and part of the objectives should be to teach students to become independent learners. When students ask me questions, I require them to at least have a book open to the appropriate page to show me they tried to find the answer on their own. I have resources such as lab manuals and frog dissection guides laying around the lab. I also encourage my students to try to discover the answers to their questions before asking for help. Lab Resources - The frog dissection gallery is a good resource for teachers and students to review the parts of the frog. I also use virtual frogs before the dissection to give them a clue about the structures they will see inside. Usually the students decide who is going to read / write, and who is going to do the cutting. If I have extra frogs I might allow students to work alone (their choice). Group sizes - I usually put my students in groups of 2, possibly three if I have an odd number of students. The bullfrogs are messier and hard to cut, I have a "lottery" to pick a group to do the bullfrog and then the other students in the class can see what it looks like. Bullfrogs are much larger, but that doesn't mean they are easier to dissect. I have also gotten a single pack of bullfrogs to give one per class. It is not necessary for this lab to get the injected frogs. ![]() Obtain grass frogs from a biological supply company.
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