Lesson Plan
Teacher Ramón Guerra
Unit/Topic: Soil Testing (Smart Plant Growth) Date: July 25th, 2019
Key Learning Area: Science Year Level: 4º
At the end of the session students will
be able to understand that testing soil is a way farmers can ensure growth of
healthy crops.
LESSON STRUCTURE:
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Time
|
Introduction (Set):
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Teaching Approaches |
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5 min.
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Activator
Questions and answers hunt
Students
pick cards with either questions or answers. Then, they will take some minutes
looking for the person who has the answer for the question or the question
for the answer. Finally, each match will say their question and answer to check
if this match is correct or not.
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Grouping strategies |
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Time
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Main Content: theory
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Teaching Approaches |
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10 min
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What
is soil? / Layers of the soil / Importance of fertile soil for the ecosystem
/ Characteristics of healthy soil / Soil testing: organic materials (humus), ph, sediments, texture, type of soil, permeability,
moisture, etc. / Ensuring crops
through the method: smart plant growth.
General conditions to take into account when planting:
weather (precipitation, temperature) type of soil.
|
Building knowledge |
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Time
25 min
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Main Content: activity
Outcomes:
which type of soil has more organic material? Which type of soil has less
organic material?
Comparing
amount of nutrients (humus) in soil.
Materials:
three different soil samples (sand, silt, clay), hydrogen peroxide.
Procedure: Add about 5 ml of hydrogen peroxide in each sample of soil. Observe
the chemical reactions (take notes using the sheet given), use an stopwatch
to estimate how much time the chemical reaction occur. Write conclusions
based on observations and be ready to discuss.
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Teaching Approaches
Science demonstration
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Time
10 min.
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Discussion and drawing
conclusions
The whole class will actively comment what they have learned.
List
plants per kind of soil
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|
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Time
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Conclusion:
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Brainstorming |
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5 min
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How using the Smart Plant Growth technique can contribute in
having healthy food for populations?
Think more:
Pesticides
and hormone use for plant care and growth can influence negatively in human
health. How can we avoid using them and let plants grow in a healthy way?
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|
Resources
(Include equipment required for class and/or for teacher
preparation)
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REFLECTION
OBSERVATION
SHEET
Observe
the chemical reactions. Check the correct answer.
Sand
___ no bubbles at all ___ few bubbles ___ a lot of bubbles
2.
How much time did the bubbles last?
___ no bubbles ___ less than 1 min ___
more than 1 min ____ more than 5 min
Silt
1.
Bubble formations
___ no bubbles at all ___ few bubbles ___ a lot of bubbles
2.
How much time did the bubbles last?
___ no bubbles ___ less than 1 min ___ more than 1
min ____ more than 5 min
Clay
1.
Bubble formations
___ no bubbles at all ___ few bubbles ___ a lot of bubbles
2.
How much time did the bubbles last?
___ no bubbles ___ less than 1 min ___ more than 1
min ____ more than 5 min
Conclusions
1.
2.
3.
