Subject: science 10
Grade Level: Grade 10
Objective:
1. Analyze the relationship between volume and temperature at the constant
pressure of a gas.
2. Perform an experiment on the relationship between volume and temperature at
the constant pressure of a gas.
3. Recognize the practical application of Charles Law in everyday scenarios.
Learning within the curriculum:
1. The topic of gas laws in chemistry, particularly the Ideal Gas Law, relates to the
current lesson as it encompasses the behavior of gases under various conditions,
expanding on the concept of volume and temperature. Understanding the Ideal Gas
Law helps students see how Charles Law fits into a broader context of gas behavior.
2. The study of thermal expansion of materials also connects to the objective, as it
illustrates how temperature changes can affect the volume of solids and liquids,
thereby reinforcing the concepts learned from Charles Law about gases.
Learning across the curriculum:
1. In mathematics, the topic of linear equations can be integrated, as students can
represent the relationship between volume and temperature as a linear graph,
further emphasizing the analytical skills required to interpret data. This connection
helps students visualize the relationship quantitatively.
2. In physics, the concept of kinetic molecular theory can be examined, which
explains how temperature affects the motion of gas particles and correlates to
volume changes, thus deepening students’ understanding of molecular behavior in
relation to Charles Law.
Elicit:
Teaching Strategy: Cooperative Learning
Instructional Materials: Whiteboard and markers
Anecdote 1: "When I was a child, I remember my mother cooking rice and how she
would always tell me to keep the lid on the pot. She explained that if we kept it
covered, the steam would increase the temperature inside, causing the rice to
expand and cook perfectly. This is similar to how gases behave with temperature
changes."
Anecdote 2: "I once visited a local bakery where I saw bread rising in the oven. The
baker explained that as the temperature increased, the air inside the dough
expanded, making the bread fluffier. This is a great example of how heat affects
volume in gases."
Engage:
Teaching Strategy: Interactive Learning
Instructional Materials: Balloons and warm water
Energizer 1: "Hot Air Balloon Activity" - Students will blow up balloons and then
place them in warm water. They will observe how the balloons expand as the
temperature of the air inside increases, linking this to the concept of Charles Law.
Energizer 2: "Temperature Walk" - Students will take a short walk outside (or in the
classroom) to feel the difference in temperature, discussing verbally how they think
temperature can affect different materials, including gases. This requires no
materials and can be done in any setting.
Explore:
Activities
Activity 1: "Charles Law Experiment"
Teaching Strategy: Inquiry-Based Learning
Materials: Balloons, measuring tape, thermometer, water
Significance: This experiment allows students to observe the direct relationship
between volume and temperature in a controlled setting.
Instructions:
1. Fill a balloon with air and measure its circumference.
2. Place the balloon in warm water and measure the temperature.
3. After 10 minutes, measure the balloon's circumference again.
Rubrics:
- Accurate measurements: 5 pts.
- Clear observations and explanations: 5 pts.
- Participation and teamwork: 5 pts.
Assessment Questions:
1. What measurements did you take?
2. How did the balloon's volume change with temperature?
3. What conclusion can you draw about the relationship between volume and
temperature?
Activity 2: "Graphing Charles Law"
Teaching Strategy: Constructivist Learning
Materials: Graph paper, markers
Significance: This activity helps students visualize the relationship between volume
and temperature through graphing, reinforcing their analytical skills.
Instructions:
1. Record the temperatures and corresponding volumes from the previous
experiment.
2. Plot the data on graph paper, with temperature on the x-axis and volume on the yaxis.
3. Draw a line of best fit and analyze the graph.
Rubrics:
- Correctly plotted points: 5 pts.
- Clear line of best fit: 5 pts.
- Analysis of the graph: 5 pts.
Assessment Questions:
1. What does the graph indicate about the relationship between temperature and
volume?
2. How does the line of best fit help you understand the data?
3. What predictions can you make based on your graph?
Explain:
Activity 1 - The objective of analyzing the relationship between volume and
temperature at constant pressure helps students understand how gases expand
when heated, following Charles Law.
Activity 2 - Recognizing practical applications of Charles Law in everyday scenarios
allows students to see the relevance of scientific principles in real life, such as in
cooking or weather phenomena.
Activity 3 - Understanding that gas behavior can be predicted through mathematical
relationships deepens students' comprehension of science as a way of explaining
the natural world.
Elaborate:
Teaching Strategy: Project-Based Learning
1. Task: Students will create a presentation on how Charles Law applies to a realworld scenario, such as weather balloons or hot air balloons.
2. Task: Students will conduct a home experiment observing how the volume of a
gas changes with temperature (e.g., heating a sealed plastic bottle).
Discussion: After the presentations, students will discuss the findings, sharing their
experiences and insights on how gas laws govern practical situations in their lives.
Evaluate:
Teaching Strategy: Formative Assessment
Questions:
1. Describe how you would explain Charles Law to someone who has never heard of
it.
2. What factors must be kept constant when observing the relationship between
volume and temperature?
3. Can you think of a situation where Charles Law is applied in daily life?
For Higher Order Thinking Skills:
Questions:
1. How would the behavior of gases change if the pressure were not constant?
2. Can you hypothesize what would happen to the volume of a gas if the temperature
were drastically increased?
3. How does understanding Charles Law help us predict weather patterns?
Answers:
1. If pressure is not constant, the relationship between volume and temperature may
not hold true, leading to unpredictable gas behavior.
2. If the temperature were drastically increased, the volume of the gas would likely
expand significantly, as predicted by Charles Law.
3. Understanding Charles Law allows meteorologists to predict how air pressure and
temperature changes can affect weather systems, leading to more accurate
forecasts.
Extend:
Teaching Strategy: Contextualized Learning
Instructional Materials: Videos or articles on gas laws
Usecase 1: Students can observe and report on how temperature affects the
behavior of gases in different climates, such as comparing data from tropical and
temperate regions. This will help them apply their understanding of gas laws in
various environmental contexts.
Usecase 2: Students can analyze how gas laws impact engineering designs, such
as in the construction of pressure vessels or in automotive engineering, linking
scientific principles to real-world applications in technology and design.
Assignment:
1. Write a short essay on a practical application of Charles Law in your daily life or in
a field of interest (e.g., cooking, weather, or engineering). Use specific examples to
illustrate your understanding of the concept.