"Long and Short" is an insightful chapter in the CBSE Class 3 Mathematics curriculum that introduces students to the concept of measurement. This chapter is designed to help young learners understand and compare lengths using standard units such as centimetres (cm), metres (m), and kilometres (km), fostering a practical understanding of the world around them.
Introduction to CBSE Class 3 Mathematics: Long and Short
Through engaging activities and real-life examples, “Long and Short” teaches students how to measure and compare different objects. The chapter begins with simple comparisons between the lengths of various items, encouraging students to observe and think critically about size and distance. It then introduces them to formal units of measurement, including centimetres and metres, explaining how to use rulers and measuring tapes effectively. By exploring measurements in familiar contexts, such as comparing the length of their arms to their mother’s or estimating the number of steps to cross a road, students learn the practical applications of measurement in daily life. This chapter not only enhances their mathematical skills but also their observational and analytical abilities, preparing them for more complex concepts in the future.
Assignments on CBSE Class 3 Mathematics: Long and Short
- Measuring Around: Students are tasked with measuring various objects around their home or classroom using a ruler or measuring tape and recording their lengths in centimetres or metres.
- Estimation Station: Learners estimate the length of common items before measuring them to compare their guesses with actual measurements, developing estimation skills.
- Creative Comparisons: Children draw objects of different lengths and label them, reinforcing their understanding of long and short.
- Measurement Hunt: A scavenger hunt where students find items of specific lengths, encouraging exploration and application of measurement concepts.
Textbook Questions Solved
Q1: Measure your arm and your mother’s arm. What is the difference?
A: My arm is shorter than my mother’s. This question helps students practice measuring and comparing lengths using a flexible approach.
Q2: How many steps will Dorji cross the road in?
A: Dorji might cross the road in 6 steps. This encourages students to estimate distances and relate them to real-life activities.
Q3: What are the little lines on a scale used for?
A: The little lines on the scale are used for measuring smaller objects with precision, introducing students to the concept of finer measurements.
Q4: Which is longer, your thumb or your little finger?
A: The thumb is longer. This question prompts students to observe and compare different parts of their body.
Q5: Ant Gibli has to reach the grains. Which is the shortest road?
A: In the given image, Road B is the shortest. This encourages problem-solving and critical thinking in determining the shortest distance.
ConclusionÂ
“Long and Short” is a foundational chapter in the Class 3 Mathematics syllabus that equips students with essential measurement skills. Through practical exercises and relatable examples, students learn to measure, compare, and estimate lengths in different units, building a strong base for future mathematical concepts. This chapter not only teaches about measurements but also encourages curiosity, observation, and analytical thinking among young learners.
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Questions and Answers for CBSE Class 3 Mathematics: Long and Short
- Q: How is length measured in the metric system?
A: Length is measured in centimetres, metres, and kilometres. - Q: What unit would you use to measure the length of a pencil?
A: A pencil is measured in centimetres. - Q: Which is longer, 1 metre or 100 centimetres?
A: They are equal; 1 metre is 100 centimetres. - Q: How many metres are there in a kilometre?
A: There are 1,000 metres in a kilometre. - Q: What would you use to measure the height of a tree, centimetres or metres?
A: Metres. - Q: Is the width of a door measured in centimetres or metres?
A: The width of a door can be measured in centimetres for precision. - Q: How many centimetres make up one metre?
A: 100 centimetres make up one metre. - Q: Can you measure liquid in centimetres or metres?
A: No, liquid is measured in litres, not centimetres or metres. - Q: What is longer, a kilometre or a metre?
A: A kilometre is longer than a metre. - Q: Would you measure the length of a book in centimetres or metres?
A: Centimetres.
