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Objectives :
Objectives :
- To understand how simulation can integrate in teaching and learning.
- To differentiate between the theory and simulation in teaching and learning.
- To understand the concept of photosynthesis
Introduction
:
Simulation is an operation of model, which is representation of that system. It is amenable to manipulation which would be impossible, too expensive, too impractical to perform on the systems which is potrays. There are some reasons teaching by using simulations. First, it can promotes the deep learning that can empower understanding as supposed to surface learning.
In deep learning, students can learn the scientific method including the importance of model building that use instructional simulations and gives students concrete formats of what it means to think like a scientist and do scientific work. Besides, students can know the relationships among variables in a model. Simulations help the students to understand more.
By using simulations, it can help the students on how to use a model to predict outcomes, where it can help the students understand that scientific knowledge rests on the foundation of testable hypothesis. By using simulation, we can conduct the experiment more easier and faster. Besides, we can get the results as soon as possible, because of the information that have been provided. So, students will be more understand as they can change the variables as they want and this can help the students to save their time and understand the theory.
Title : Photosynthesis
Objective : An
Overview of Photosynthesis
Photosynthesis converts light energy into the
chemical energy of sugars and other organic compounds. This process consists of a series of chemical
reactions that require carbon dioxide (CO2) and water (H2O)
and store chemical energy in the form of sugar.
Light energy from light drives the reactions. Oxygen (O2) is a by product of
photosynthesis and is released into the atmosphere. The following equation summarizes
photosynthesis:
6 CO2 + 6 H2O
→ 6(CH2O) + 6 O2
Photosynthesis transfers electrons from water
to energy-poor CO2 molecules, forming energy-rich sugar molecules. This electron transfer is an example of an
oxidation-reduction process: the water is oxidized (loses electrons) and the CO2
is reduced (gains electrons).
Photosynthesis uses light energy to drive the electrons from water to
their more energetic states in the sugar products, thus converting solar energy
into chemical energy.
Photosynthesis:
Using DPIP As an Electron Acceptor
In this activity you
will measure the rate of electron excitation when light hits chlorophyll. You
will use DPIP, a blue compound, as an electron acceptor. The thylakoid membranes of the chloroplasts are mechanically
disrupted so that the natural electron transport chain no longer functions
normally.
When light strikes the
chloroplasts, the DPIP is reduced by the excited electrons from chlorophyll,
and it changes from its original blue colour to colourless as it accepts the electrons. You will use a
spectrophotometer to measure the colour change, which gives an indication of the rate of the
light reactions of photosynthesis under various conditions.
Experiment: The Effect of Light Levels on the
Rate of Photosynthesis
Experimental Question: How does the amount of
light affect the rate
of photosynthesis?
The amount of light
affects the process of photosynthesis because the plant uses the sun for food
so it can eat it’s own food.
Prediction: How do you
think the amount of light
will affect the rate of photosynthesis?
If the plant eats the
food (sunlight energy) then it has
energy to create oxygen, because it needs the sun to survive.
Variables:
Independent variable (the variable you are changing): The color of the light.
Dependent
variable (the data you are measuring): We are
measuring the amount of oxygen bubbles it is producing.
Procedure:
- Set the Light Colour to Colourless
- Set the CO2 level to 6.0
- Run the simulation using the different levels of light, and record your data in the table below.
Conclusion: Was your
hypothesis correct?
Answer: Yes because are hypothesis said that the
more light the more oxygen bubbles.
Which level of light makes photosynthesis happen
the
fastest
Answer: 10.0
Which level of light makes photosynthesis happen
the slowest?
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