Happy Monday!

Period 1/2: Owl Pellet Dissection
Learning Goal- Dissect an owl pellet and identify the bones found.
Task 1. Read "How do Barn Owls Make Pellets?"
- How is the owl's digestive system similar to ours? how is it different?
- What can we learn about the diet of an owl by dissecting a pellet?
Task 2. Owl Dissection Lab:
Assign roles to group members:
- Project Manager: reads directions, keeps group on task
- Materials Manager: obtains all lab materials, and puts them away (owl pellet, ruler, paper plate, tweezers, probe, rubber gloves, magnifier)
- Data Manager: records all data, observations, answers to questions on lab document in Google Classroom.
- Lab Technician: takes measurements, handles samples, responsible for pellet dissection
- Work with your partners to measure the length, width, and mass of your owl pellet. Record the information on your lab document.
- Dissect the pellet by first breaking a piece off with your finders. Roll it gently between your thumb and index finger, feeling for any hard substances. You can watch this video of an owl pellet dissection to get some tips.
- Find a skull/jaw. Measure the length of the jaw in millimeters. Record your measurement on your lab document.
- Separate the smaller bones from the fur or feathers. Use the Identifying Owl Pellet Contents chart to separate the bones into different categories. Record the information on the table in your lab document.
- Answer all analysis questions on your lab document. Discuss each question with your group and work together to complete.
Task 3. Reconstruct a skeleton from your pellet and glue it on to colored construction paper. Sketch in the missing bones. See vole skeleton below for example:
Task 4. Ticket out: What surprised you about the owl pellet dissection?
Periods 4 and 5: Gender Determination
Learning Goal: Be able to explain how a baby's gender is determined.
Task 1: Body Systems Quiz
Task 2: Watch Brain Pop video: Gender Determination
Task 3: Take review quiz
Task 4: Go to Google Classroom and complete the assignment (you will need to have BrainPop open on another tab so you can refer to the video, quiz, and Q and A section.
Extension: Start reading pp. 280-289 in interactive reader and answer all reading checks and questions.