NCERT solutions for Math - Magic [English] Class 5 chapter 9 - Boxes and Sketches [Latest edition]

Ramya made four more shapes. Each is to be folded along the dotted lines. You have to find out which of these can be made into a box.

Buddha wants to make a paper cube using a squared sheet. He knows that all the faces of a cube are squares. He draws two different Shapes.

• Will both these shapes fold into a cube?

Buddha wants to make a paper cube using a squared sheet. He knows that all the faces of a cube are squares. He draws two different Shapes.

• Draw at least one more shape which can fold into a cube.

Buddha wants to make a paper cube using a squared sheet. He knows that all the faces of a cube are squares. He draws two different Shapes.

• What will be the area of each face of the cube?

Buddha wants to make a paper cube using a squared sheet. He knows that all the faces of a cube are squares. He draws two different Shapes.

• Draw one shape which will not fold into a cube.

Buddha wants to make a paper cube using a squared sheet. He knows that all the faces of a cube are squares. He draws two different Shapes.

• Look around and discuss which things around you look like a cube. List a few.

• Find out which of the other 8 shapes can be folded to make an open box.

• Draw more shapes that will not fold to make an open box.

All boxes are not cubes. Here are some different kinds of boxes. Match the shape on the left with a box into which it will fold.

Which is the front side of her house? How many windows are there on the front side?

Which one is Vibha’s house?

Why do the other three deep drawings not match the floor map? Discuss.

Look at this floor map of a house. Make doors and windows on the deep drawing of this house. 

• Are there any windows you couldn’t show on the deep drawing? Circle them on the floor map.

Try to make a floor map of your own house.

Soumitro and his friends made deep drawings of a cube. These are their drawings.

• Which of the drawings look correct to you? Discuss.
• Can you add some lines to make a drawing (f) into a deep drawing of the cube?

This cut-out is folded to make a cube.

Which of these are the correct deep drawings of that cube?

Chanda wants to make a deep drawing of this cube. She draws the cube-like this.

• In the same way, make a deep drawing of a box that looks like this.
  

• If you look at the bridge from the top, how will it look? Choose the right drawing below:
  
  

Look at the photo and try to make a deep drawing of this bridge.

Make drawings to show how this bridge will look

• From the top
• From the front
• From the side

Make a matchbox model which looks like this.

Also, make a deep drawing of the model in your notebook.

How many cubes are needed to make this interesting model?

Here are some drawings of the model. Mark the correct top view drawing with 'T' and the correct side view drawing with 'S'.