A Study of Intensity of Light and its Effects on the

Microclimate of Primary and Secondary Forest

La Selva Biological Station, Sarapiqui, Heredia, Costa Rica

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Figure 2-Luminosity    Figure 3-Soil Temp    Figure 4- Air_Temp    Figure 5-Humidity    Table 1

Classroom Applications

Being that time was definitely of the essence, we designed our research to be completed quickly, efficiently, and in one day.  Our group was given a time frame of approximately two days to design research, collect and analyze data and complete a thorough paper illustrating our work.  Therefore we immediately jumped into action and began.  Being that many of us teach in settings where we have strict time constraints, this pressure is not unlike what our students face in the classroom.

To determine our project topic, the entire group utilized a variation of the strategy called “50 questions.”  First, individuals were given the opportunity to isolate themselves in the rainforest in order to reflect on the Costa Rican experience.  Each team member attempted to ask questions about things they had seen or heard, and were interested in knowing more.  We then individually narrowed our inquiries to topics that could be feasibly researched.  Finally, individuals were grouped.  Rather than placing ourselves in random groups in which to work, we formed what are known as affinity groups.  Each member chose a topic in which he or she was most interested in, and then those topics were grouped together similarly.  For example, our group focus was on abiotic environmental factors, and we decided to center on the effect of light intensity.  Other topics included animals – leaf cutter ants and mammal usage of man made trails, and plants – bromeliads.  By using this variation in a middle or high school classroom, all students have the opportunity for individual reflection, and for the sharing of their personal ideas.  Once placed in the affinity groups, each member can then tie in their personal interest if applicable.

After being placed in our affinity group we got right to work by planning our experimental design and presentation.  All members had an opportunity to voice their opinions in a non-threatening, and open-minded environment.  A very helpful aspect of our planning was that we were able to sit down in a comfortable area to popcorn our ideas.   By doing so, we were empowering ourselves to maintain positive attitudes and high productivity.  In our classrooms, it is also important to maintain positive learning climates for our students.  We can not expect them to perform at their highest capabilities if we do not give them the tools to do so.  This includes maintaining a comfortable place to learn. 

While three members of the group; Dorothy, Rafael, and Curtis ventured out into the forest to collect data, Julia began work researching the LaSelva library and setting up the written document and presentation.  By using this strategy we were able to maximize our time and energy.  This is also effective in cooperative learning situations in that all students are actively participating and managing time positively. 

Upon completion of the data collection, each member again rose to the occasion by working on a different aspect of the formal write up.  Dorothy worked on data charts and graphs on Microsoft Excel, while Curtis proofread the previous writing that Julia had done.  This was especially effective in speeding up the process to meet our deadline.  This strategy can also be applied to the classroom in several ways.  In the regular setting, students can be assigned roles by the teacher by way of numbering off or by drawing out of a hat.  In advance or gifted classes, students can choose to assign themselves to a role if that role can be agreed upon by the entire cooperative group in consensus.

It is wise to gain student “buy in” to projects by allowing them to collaborate with the teacher on how they should be assessed.  Our group designed a rubric by which our projects would be scored based on what we thought was appropriate assessment indicators.  Because of this rubric, we feel genuine ownership and pride in what we have designed. 

In closing, as teachers, we must continue to strive to challenge our students in ways that are positive and nourishing.  It is not only our job to teach them our subjects, but also to allow them room to grow into young thinkers who are capable of leading this world in a positive direction in the next generation.  Whether we know it or not, we are the guidance of their successes, and we should definitely take that role seriously.