Oysters on the Move: Calculating Swimming Speed
Lesson Plan Standards:MD State: 1.1.1, 1.1.2, 1.1.3, 1.1.5, 1.2.1, 1.2.2, 1.2.3, 1.2.6, 1.2.7, 1.3.4, 1.4.1, 1.4.2, 1.4.4, 1.4.6, 1.4.7, 1.5.1, 1.5.2, 1.5.5, 1.5.7, 1.5.9, 1.7.4, 3.2.1, 3.5.2, 3.5.3, 6.4.1, 6.4.3
Lesson Plan:Oyster Behavior in the Larval Stage
Oysters are microscopic, free-swimming organisms during the first few weeks of life. Research is underway to determine how environmental factors, like water temperature and salinity level, affect the oyster's ability to change location in the water column during this critical stage of life. Students will determine the swimming speed and the effect, if any, of various environmental factors. [Lesson time: 90 minutes]
1. Make quantitative observations of larval behavior using metric units (mm, cm).
2. Calculate "swimming speed" of oyster larvae using the formula for velocity [V = d/t].
3. Identify patterns in data and the influence of variables.
- Prepare "transparency rulers" before class, and make sure all computers are able to access the video clips.
- Assemble students into pairs and distribute a copy of the lab handout, "Oysters on the Move... Calculating Swimming Speed," to each student.
- Assign each pair of students one Video Clip FILE (from "FILE C" through "FILE H.")
- Students will follow the procedure on the lab handout.
- The objective is to calculate the swimming speed of an oyster larva by measuring the distance it moves in a certain amount of time.
- Students complete a total of six trials and may run the clip as many times as necessary.
- See "Teacher Notes" (download from Lesson Materials) for details about the procedure.
STUDENT HANDOUTS: The student handouts (available in the Lesson Materials section) are the property of Ben Schulman but may be modified or adapted as necessary for classroom use by the instructor.
VIDEO DATA CLIPS: The Oyster Larvae Video Clips are the exclusive property of The University of Maryland and Horn Point Laboratory and may only be used in the manner outlined in this educational lesson plan. Video clips may NOT be copied, transferred, nor used in any other manner without written permission from The University of Maryland and Horn Point Laboratory.