Please select a subject first
Advertisements
Advertisements
There are two beautiful lakes near a village. People come for boating and picnics in both the lakes. The village Panchayat is worried that with the noise of the boats the birds will stop coming. The Panchayat wants motorboats in only one lake. The other lake will be saved for the birds to make their nests.
- A longer boundary around the lake will help more birds to lay their eggs. So which lake should be kept for birds? Which lake should be used for boats?
Concept: undefined >> undefined
Whose footprint is larger - yours or your friend’s?
Concept: undefined >> undefined
Advertisements
How will you decide? Discuss.
Concept: undefined >> undefined
Is the area of both your footprints the same?
Concept: undefined >> undefined
Each rectangle is made out of 12 equal squares, so all have the same area, but the length of the boundary will be different.
Which of these rectangles has the longest perimeter?
Concept: undefined >> undefined
Each rectangle is made out of 12 equal squares, so all have the same area, but the length of the boundary will be different.
Which of these rectangles has the smallest perimeter?
Concept: undefined >> undefined
Which has the bigger area - one of your footprints or the page of this book?
Concept: undefined >> undefined
Which has the smaller area - two five-rupee notes together or a hundred rupee notes?
Concept: undefined >> undefined
Look at a 10 rupee note. Is its area more than hundred square cm?
Concept: undefined >> undefined
Is the area of the blue shape more than the area of the yellow shape? Why?
Concept: undefined >> undefined
Look at the figure in the white box. On which of the dotted lines will you keep the mirror so that you get shape (b)? Also, tell which part of the picture will be hidden when we keep the mirror on the dotted line.
Concept: undefined >> undefined
Now make a line on the white box to show where you will keep the Mirror Games mirror to get the picture next to it.
Concept: undefined >> undefined
Have you ever seen a windmill? What is it used for?
Concept: undefined >> undefined
Does your windmill look the same on `1/4` of the turn?
Concept: undefined >> undefined
Does it look the same on half a turn? Discuss.
Concept: undefined >> undefined
Does the fan look the same on the `1/4` turn?
Concept: undefined >> undefined
Will this fan also look the same after the `1/4` turn? Draw in the yellow box
Concept: undefined >> undefined
Which fan will look the same on a `1/3` turn?
Concept: undefined >> undefined
Draw this shape after the `1/3` turn.
Concept: undefined >> undefined
See this Pattern
The rule of the pattern is — turning by 45° each time. Which will be the next? Tick (✓) the right one.
Concept: undefined >> undefined
