Class 6 NCERT bridge course Answers Activity W2.1 Measuring and Comparing Lengths with Objects

 Activities for week 2

Activity W2.1 

Measuring and Comparing Lengths with Objects

 The students may be asked to measure the length of longer edges of mathematics textbook. 

 They may be asked to find the length of the boundary of the top of a table in the classroom using the above length. 

They may check how many such books can be arranged along the boundary of the top.

The same process may be done with the shorter edge of the book. 

 They may check if there is any other object of different shape in the classroom having the same boundary length using the book. 

 They may use any other book or object, such as, pencil etc.

Activity W2.1: Measuring and Comparing Lengths with Objects

Objective

Students will explore length, perimeter, and spatial estimation by using a standard object (like a textbook or pencil) to measure and compare dimensions of classroom items.

Materials Needed

• Mathematics textbook (preferably one per student or pair)

• Ruler or measuring tape

• Pencil or another regular object (optional)

• Worksheet for recording answers

• Camera/phone (for taking images if applicable)

• A chart or board for group findings

Instructions

Step 1: Measure the Length of a Book

• Ask students to measure the longer edge of their mathematics textbook.

  • Example: The longer edge = 25 cm

• Then, measure the shorter edge.

  • Example: The shorter edge = 18 cm

Step 2: Measure the Table Top Boundary

• Use the textbook’s length to estimate the perimeter (boundary) of the table top.

• Students place the book end-to-end along the sides of the table.

• Count how many books fit along each edge.

  Example:

  • Table top dimensions: 100 cm by 60 cm

  • Longer side of book = 25 cm

    • 100 cm ÷ 25 cm = 4 books

  • Shorter side of book = 18 cm

    • 60 cm ÷ 18 cm ≈ 3.33 books (~3 and a third)

  So:

  • Top side: 4 books

  • Side: 3 books

  • Total books around the boundary = 2(4 + 3) = 14 books approx.

Step 3: Compare with the Shorter Edge

• Repeat the process using the shorter edge (18 cm) to measure the boundary.

• See how the number of books needed changes.

Step 4: Find Another Object with Similar Perimeter

• Ask students to find another object (e.g., a book, pencil box, or bag) with a similar boundary length.

• Measure its perimeter using the same textbook edge.

• Compare the number of books used.

Worksheet Example (Fill in the Blanks)

Item Measured	Measured By	Object Edge Used (cm)	How Many Fit Along Each Side	Total Perimeter (Books)
Table	Textbook	25 cm (long edge)	4 along long side, 3 along short side	14 books
Chair seat	Textbook	18 cm (short edge)	3 along each side	12 books
Bag (zip edge)	Pencil	7 cm	5 along top, 3 along side	16 pencils

Learning Outcomes

• Understand and apply the concept of length and perimeter.

• Develop estimation and comparison skills.

• Reinforce units of measurement in practical settings.

• Improve spatial awareness using familiar classroom objects.