This video clip introduces this lesson as it takes the students from learning about the chemical process of photosynthesis to seeing photosynthesis in action with the student-developed inquiry labs. The students really enjoyed creating their own investigations and observing the process of photosynthesis as they observed their plants over a three week lab period.
Students will watch this video to review the steps of photosynthesis. After the video, students will create a rudimentary model to demonstrate the steps of the chemical reactions that occur as part of photosynthesis. Students will write a summary paragraph that describes how the chemical reactions that are represented in photosynthesis connect to their inquiry lab that will investigate the rate plant growth. This prompt will require students to apply their understanding of photosynthesis and apply it to their inquiry experiment that will examine the rate of plant growth based on their identified variable and control groups.
Student Response to Video: Student work samples demonstrate a stronger understanding of photosynthesis compared to early lessons in this unit. This video does a nice job providing easy to follow graphics and illustrations that support students' learning.
This inquiry lab investigation continued for a total of three weeks. Students were given a day in a prior lesson to complete the following tasks:
Students completed any necessary work at home, so they were able to arrive in class the next day ready to set-up and implement their inquiry lab.
Every other day students were given 5 minutes at the start of the class period to attend to their inquiry lab. Students were encouraged to complete the following:
Students recorded their data and observations in their Student Inquiry Lab Record Sheet.
See the section below for samples of Student Work.
Both student work samples demonstrate the need for more teacher oversight on a daily basis. Instructing the students to "check-in" with their plants, water, measure, and take observations may not have been enough for each lab group. Please see the Teacher Reflection below to learn more about the need for more teacher oversight!
This section provides photographs that demonstrate this student-inquiry lab as the students brought their learning and the process of photosynthesis to life!
Images That Captured The Spirit Of This Inquiry Lab Experience:
Sample of Group Work Image - it was great seeing groups that are normally not very productive, become inspired by this inquiry project and apply themselves.
Measuring Plant Growth - Students took measurements every other day for three weeks.
Recording Observations Image - Students needed to record their observations and measurements on their student record sheet.
Plants In My Cupboards - Students were able to develop any type of procedure they wanted which resulting in plants in every cupboard of my classroom.
Plants on the Sill - Students were able to develop any type of procedure they wanted which resulting in plants an each of the window sills of my classroom.
Group Measurements - Lab groups held each other accountable to take accurate measurements and detailed observations.
Measuring Volume Of Water - New group leaders emerged as students gained confidence in the science lab.
Gatorade as a Variable - Students thought outside the box and tested different liquids in place of water as their variable group.
Sample of Student work #1 - Students will continue to record observations and measurements every other day for the next three weeks. These samples of student work demonstrate the collective efforts during the three week inquiry investigation:
Sample of Student Work #2- This student's lab group set themselves up for success by creating a detailed procedure that could be easily replicated by another group! The students worked diligently each day to gather observations and measurements to ensure a complete set of data. They included their graph and conclusion statement that explained their analysis of the lab data. This group is a true example excellence for this project.
Sample of Student Work #3 - This student's lab group was also dedicated to the collection of the data and worked hard each day to complete their observations. This group developed a detailed procedure but went a step further and created a daily log that recorded their data. The group discovered that their detailed notes made it easier to analyze the data because they did not have to rely on their memory. This group went above and beyond and will be used as a shining example for years to come.
Keep in mind that not all groups completed the project to such a high standard. Some groups, due to the lack of daily micro-managing oversight, drifted in their focused and failed to complete to their daily data collections. The students' misuse of class time made it almost impossible to complete a reasonable data analysis and a corresponding conclusion statement. Here is an example of a lab group that submitted a report with Incomplete Data Sample and did not create a graph. This student work contained a brief procedure, very little observation and data, and no graph to demonstrate their data analysis so in short this lab report Needs More Details Sample.
Smiling Student - Students took pride in their work and the smiles showed it!
Proud of his Work - More smiles and excitement that the plants were growing!
As a summative activity for this multi-day inquiry lab, students will be provided the opportunity to reflect on their scientific investigative process by responding to the following prompts.
Sample Student Responses- the overwhelming sentiment is that students enjoy inquiry-based experiments that give them the freedom to create their own investigations. When students own their learning, then they are more invested and interested in the curriculum!
Under the growing lights - As a group, the students were very proud of what they had accomplished!