Measuring Solids and Time: Metric Units, Materials, Accurate Measurement and Improvisation Primary 4 (Basic 4) Second Term Week 10 Basic Science and Technology

MEASUREMENT: MEASURING SOILDS AND TIME, MATERIALS AND METRIC UNITS FOR MEASURING SOILDS AND TIME, ACCYRATE MEASUREMENT AND IMPROVISATION PRIMARY 4 (BASIC 4) SECOND TERM WEEK 10 BASIC SCIENCE AND TECHNOLOGY

BASIC SCIENCE AND TECHNOLOGY

SECOND TERM

WEEK 10

PRIMARY 4 (BASIC 4) 

THEME – LIVING AND NON LIVING THINGS 

PREVIOUS LESSON – Measuring the Volume of Liquids in Millilitres (mL), Centilitres (cL) and Litres (L) – Primary 4 (Basic 4) Second Term Week 9 Basic Science and Technology

TOPIC – MEASUREMENT OF SOLIDS AND TIME 

LEARNING AREA

1. Introduction

2. Measuring Solids and Time

3. Materials and Metric Units Used for Measuring Solids and Time

4. Accurate Measurements and Improvisation

5. Weekly Assessment/Assignment/Test Questions and Answers

6. Summary

LEARNING OBJECTIVES 

By the end of the lesson, pupils should be able to:

1. Explain the meaning of measuring solids and time.

2. Identify metric units used for measuring solids and time.

3. Mention materials used for measuring solids and time.

4. Measure solids and time accurately.

5. Improvise simple measuring tools for solids and time.

ENTRY BEHAVIOUR

Pupils have previously learned how to measure liquids using metric units such as litres and millilitres and measuring instruments like measuring cylinders and cups.

This lesson builds on that knowledge by helping pupils understand that not only liquids, but also solids and time can be measured using appropriate instruments and metric units to obtain accurate results in daily life activities.

INSTRUCTIONAL MATERIALS

The teacher will teach the lesson with the aid of:

1. Weighing scale

2. Stopwatch or clock

3. Stones, rice, sand (solids)

4. Measuring containers

5. Ruler

6. Wristwatch

7. Cardboard

8. Plastic bottle

9. Charts of time and measurement tools

METHOD OF TEACHING

Choose a suitable and appropriate methods for the lessons.

Note – Irrespective of choosing methods of teaching, always introduce an activities that will arouse pupil’s interest or lead them to the lessons. 

REFERENCE MATERIALS

1. Scheme of Work

2. 9 – Years Basic Education Curriculum

3. Course Book

4. All Relevant Material

5. Online Information

CONTENT OF THE LESSON

INTRODUCTION

In everyday life, people measure different things such as liquids, solids, and time. Solids like rice, stones, and flour can be measured to know their quantity. Time is also measured to know how long an activity takes.

LESSON 1 – MEANING OF MEASURING SOLIDS

Measuring solids is the process of finding the quantity or mass of solid materials using measuring instruments.

Metric Units for Measuring Solids

1. Gram (g)

2. Kilogram (kg)

Relationship:

• 1 kilogram = 1000 grams

MATERIALS USED FOR MEASURING SOLIDS

1. Weighing scale

2. Balance scale

3. Measuring spoon

4. Measuring cup

5. Ruler (for length of solids)

LESSON 2 – MEANING OF MEASURING TIME

Measuring time is the process of finding how long an event or activity takes.

Metric Units for Time

1. Seconds (s)

2. Minutes (min)

3. Hours (hr)

MATERIALS USED FOR MEASURING TIME

1. Clock

2. Wristwatch

3. Stopwatch

4. Calendar

MEASURING SOLIDS AND TIME ACCURATELY

To measure correctly:

1. Use the right instrument.

2. Read measurements carefully.

3. Avoid mistakes when recording values.

4. Repeat measurement if necessary.

LESSON 3 – IMPROVISATION OF MEASURING TOOLS (HAND-ON-ACTIVITIES)

1. Improvised Weighing Scale

Materials:

• Hanger

• Plastic bags

• Strings

• Small containers

Procedure:

• Hang two containers on both sides of the hanger.

• Put solids in one side and compare weights.

2. Improvised Clock

Materials:

• Cardboard

• Marker

• Paper fastener

• Pencil

Procedure:

• Draw a circular clock face.

• Mark numbers 1–12.

• Fix clock hands using paper fastener.

IMPORTANCE OF MEASURING SOLIDS AND TIME

1. It helps in cooking and baking.

2. It helps in science experiments.

3. It helps in managing daily activities.

4. It helps in trade and business.

5. It helps people use time wisely.

WEEKLY ASSESSMENT/TEST QUESTIONS AND ANSWERS/ASSIGNMENT

A. Answer the Questions

1. What is measuring solids?

2. What is measuring time?

3. Mention two units used for measuring solids.

4. Mention three units used for measuring time.

5. Name two instruments used for measuring time.

B. Fill in the Blanks

6. Solids are measured in ______ and kilograms.

7. Time is measured in seconds, minutes and ______.

8. A ______ is used to measure the weight of solids.

9. A ______ is used to measure time accurately.

10. 1000 grams make 1 ______.

C. True or False

11. Solids cannot be measured. ______

12. A clock is used to measure time. ______

13. Kilogram is a unit of measuring solids. ______

14. Stopwatch is used for measuring time. ______

15. Time is not important in daily life. ______

D. Matching

Match the items with their uses:

16. Weighing scale → A. Measuring time

17. Clock → B. Measuring weight

18. Stopwatch → C. Short unit of time

19. Kilogram → D. Long unit of mass

Seconds → E. Timing events

ANSWER KEYS

1. Measuring solids is the process of finding the weight or mass of solid objects.

2. Measuring time is finding how long an activity takes.

3. Gram and kilogram.

4. Seconds, minutes, hours.

5. Clock, stopwatch, wristwatch.

6. grams

7. hours

8. weighing scale

9. clock

10. kilogram

11. False

12. True

13. True

14. True

15. False

16. B. Measuring weight

17. A. Measuring time

18. E. Timing events

19. D. Long unit of mass

20. C. Short unit of time

SUMMARY

In this lesson, pupils learned that solids and time can be measured using standard instruments and metric units.

• Solids are measured in grams (g) and kilograms (kg) using instruments like weighing scales and balances.

• Time is measured in seconds, minutes, and hours using instruments like clocks, wristwatches, and stopwatches.

• Pupils also learned that accurate measurement is important in daily life and that simple measuring tools can be improvised using local materials.

Overall, the lesson helps pupils understand how measurement of solids and time is useful in everyday activities such as cooking, learning, and managing time.

PRESENTATION

To deliver the lesson, the teacher adopts the following steps:

1. The teacher displays objects such as rice, stones, sand, clock, wristwatch, and stopwatch.

Pupils’ Activities: The pupils observe and identify the objects.

2. The teacher asks pupils how they measure time when going to school or doing homework.

Pupils’ Activities: The pupils respond using their experiences.

3. The teacher introduces the topic: Measuring Solids and Time.

Pupils’ Activities: The pupils repeat the topic.

4. The teacher explains the meaning of measuring solids and measuring time.

Pupils’ Activities: The pupils listen attentively.

5. The teacher explains metric units for solids (grams and kilograms) and time (seconds, minutes, hours).

Pupils’ Activities: The pupils mention the units after the teacher.

6. The teacher shows instruments used for measuring solids and time such as weighing scale, clock, and stopwatch.

Pupils’ Activities: The pupils identify the instruments.

7. The teacher demonstrates how to measure solids using a weighing scale and how to read time using a clock.

Pupils’ Activities: The pupils observe and participate.

8. The teacher explains how to measure accurately and avoid mistakes when reading measurements.

Pupils’ Activities: The pupils ask questions and respond.

9. The teacher demonstrates improvisation of a simple weighing scale and clock using local materials.

Pupils’ Activities: The pupils observe and assist where possible.

10. The teacher summarizes the lesson by revising key points on solids, time, units, instruments, and improvisation.

Pupils’ Activities: The pupils participate in the summary and answer questions.

CONCLUSION

To conclude the lesson for the week, the teacher revises the entire lesson and links it to the following week’s lesson.

NEXT LESSON

Shape Construction with Paper: Materials and Practical Activities Primary 4 (Basic 4) Second Term Week 11 Basic Science and Technology

LESSON EVALUATION 

Teacher asks pupils,

1. What is measuring solids?

2. Mention two units for measuring solids.

3. What is measuring time?

4. Mention three instruments used for measuring time.

5. State one importance of measuring solids and time.