NCERT Solutions for Class 4th Maths Chapter 11 . Let us go on a nature walk (Project time) — Project Work
Book page 1743 Updated on2026-09-19
Q1.
Go for a nature walk to a nearby park or around your school with your teacher or your parents. Observe the patterns, designs, or symmetry around you carefully. Collect leaves, petals, and flowers that have fallen on the ground.
Answer
Go with your teacher or parents, carry a paper bag, and pick up only things that have already fallen.
Walk slowly and look at leaves, flowers, butterflies and spider webs.
For each one ask: can it be folded into two matching halves?
Collect about 10 fallen leaves, some petals and a few dry flowers.
Keep them flat inside an old book so they do not curl.
Sample answer: I found that the butterfly, the peepal leaf and the hibiscus flower were symmetrical. The broken leaf and the pebble were not.
Tip: Never pluck leaves or flowers from a plant. Fallen ones work just as well.
Q2.
In your project file: Categorise the leaves into symmetrical and non-symmetrical.
Answer
Fold each leaf along its middle vein. If the two halves sit on each other, the leaf is symmetrical.
Two leaves collected on the walk.
Leaf A folds into two matching halves. Leaf B does not — one side is wider than the other.
Leaf A with its line of symmetry. Leaf B has none.
Sample answer: Make two pages in your file.
Symmetrical leaves
Non-symmetrical leaves
Peepal, mango, banyan, tulsi
A torn leaf, a half-eaten leaf, a curled leaf
Why it happens: Most leaves grow equally on both sides of the middle vein, so that vein becomes the line of symmetry. A torn or insect-bitten leaf loses that match.
Q3.
Make different designs and patterns with leaves and flowers.
Answer
Arrange the leaves on a page before you paste anything.
Put one flower in the middle of the page.
Place leaves around it, the same number on every side.
Check that the left half matches the right half.
Now paste them down.
Sample answer: I made a rangoli with 8 leaves around one yellow flower. It had 4 lines of symmetry.
Tip: Draw a light pencil line down the middle of the page first. It makes matching the two sides easy.
Q4.
Make a greeting card using imprints of leaves or dry flowers.
Answer
Use a leaf like a stamp to print its shape on the card.
Fold a chart paper in half to make a card.
Brush poster colour on the back of a leaf, where the veins stand out.
Press the leaf on the card and lift it straight up.
Print more leaves so that the left and right sides match.
Write your message inside.
Sample answer: I printed 3 green leaves on each side of the card and wrote “Happy Birthday” in the middle.
Why it happens: The print is a copy of the leaf, so the printed shape has the same line of symmetry as the leaf.
Q5.
Create animals or designs using leaves and flowers.
Answer
Pick leaves whose shape reminds you of a part of an animal.
A big round leaf — the body.
Two long leaves — the ears or the wings.
Thin grass pieces — the legs and the tail.
Two small petals — the eyes.
Sample answer: I made a butterfly with 4 leaves — two big wings on top and two small ones below. Both wings were the same, so my butterfly had 1 line of symmetry down the middle.
Did you know? Almost every animal you see — a butterfly, a fish, a cat, even you — has matching left and right halves.