Measurement

Grade 5 · Mathematics

Semester 2 | Period 4 | Week 23

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Subject: Mathematics

Semester: 2

Period: 4

Week: 23

School Name:
Teacher’s Name:
Subject: Mathematics
Grade Level: Grade 5
Date: Week 23
Lesson Duration: 45 minutes
Week & Period: Week 23, Period 4
Topic: Measurement
Sub-topic: Estimating Temperature
Learning Objectives
By the end of the lesson, students should be able to:

  1. Read temperatures in degrees Celsius (°C) and Fahrenheit (°F).
  2. Recall benchmark temperatures such as freezing, boiling, room, and body temperature.
  3. Estimate the temperature of everyday activities.

Previous Knowledge
Students already know that thermometers measure heat and cold.

Instructional Materials
Mathematics textbook for Grade 5, thermometer, charts showing °C and °F scales, pictures of everyday scenarios

Lesson Development – ABC Model
A – Anticipation (Warm-up / Starter)
Time: 5–10 minutes
Teacher shows a thermometer and asks students to guess the current classroom temperature.

B – Building Knowledge (Main Lesson Body)

Time: 25–30 minutes

Definition and Explanation:

Temperature is a measure of how hot or cold an object or environment is. It tells us about the amount of heat energy present.

  • Temperature is measured using thermometers.
  • Two common scales are used worldwide to measure temperature:
    • Degrees Celsius (°C) — used in most countries and science.
    • Degrees Fahrenheit (°F) — used primarily in the United States.

 

Benchmark Temperatures (Key Reference Points):

Situation

Celsius (°C)

Fahrenheit (°F)

Freezing point of water

0°C

32°F

Boiling point of water

100°C

212°F

Normal human body temp

~37°C

98.6°F

Room temperature

20–25°C

68–77°F

Ice cream temperature (approx.)

-5°C

23°F

Boiling soup (just under boiling)

95°C

203°F

 

Examples:

  • Ice cream might be stored at about -5°C to stay frozen.
  • A sunny afternoon might have a temperature around 30°C (86°F).
  • Water boils at 100°C, which is the temperature at which it turns from liquid to steam.
  • Human body temperature is typically 37°C; a higher temperature indicates fever.

 

Learners’ Activities (Expanded):

  1. Reading Thermometers:
    • Provide students with images or actual thermometers showing different temperatures.
    • Students practice reading both Celsius and Fahrenheit scales.
    • Discuss which scale is used in their country.
  2. Matching Activities:
    • Present cards with different daily scenarios (e.g., refrigerator, boiling kettle, snow outside, summer day).
    • Learners match each scenario to a likely temperature on both °C and °F scales.
  3. Estimating Temperatures:
    • Students estimate temperatures of objects or activities before checking with thermometers or data.
    • Example: Estimate temperature of hot coffee, cold ice water, or a winter day.
  4. Hands-on Thermometer Use:
    • If available, learners use real thermometers to measure classroom temperature or outdoor temperature.
    • Record temperatures over time and discuss fluctuations.

 

Assessment Checks:

  • What temperature does water freeze at in Celsius?
    (Answer: 0°C)
  • What is the boiling point of water in Fahrenheit?
    (Answer: 212°F)
  • What is the average human body temperature in Celsius?
    (Answer: 37°C)
  • If the temperature outside is 20°C, is it likely to be colder or warmer than inside a refrigerator?
    (Answer: Warmer outside)
  • Which temperature scale is primarily used in science?
    (Answer: Celsius)

 

Notes (Expanded & Detailed):

  • Understanding benchmark temperatures helps learners relate numbers to real-life experiences.
  • Celsius and Fahrenheit scales use different reference points but describe the same physical realities.
  • Temperature affects many daily activities: cooking, weather, health, and storage.
  • Emphasize that while Fahrenheit is common in the U.S., Celsius is the global standard in science and most countries.
  • Practice converting simple temperature differences can be introduced in advanced lessons.
  • Encourage students to always note the unit (°C or °F) when reporting temperature.

C – Consolidation (Conclusion & Assessment)
Time: 5–10 minutes
Summary: Temperature is measured in °C and °F. Benchmarks like freezing, boiling, room, and body temperature help in making estimates.

Evaluation Method (Expanded):
Exit slip/quiz: What is the normal body temperature in °C and °F? Teacher will collect slips and provide oral feedback.
Assignment (Expanded): Students record the morning and afternoon temperatures for one week and present findings.
Follow-up Activity: Compare weather reports in °C and °F.
Differentiation / Inclusive Strategies
Use large thermometer visuals for clarity. Pair learners for group thermometer readings.
Teacher’s Reflection (After Class)
What worked well? ___________________________________________
What needs improvement? ____________________________________
Students’ engagement level: ☑ High ☑ Medium ☑ Low