IV

In this chapter, we will learn the different methods of measuring length, width, area, and volume. It explains the standard measurement units with the help of examples and activities. We will also learn to measure volume using a measuring cylinder.

In this chapter, we will know about the different types of bones, muscles, and joints present in our body through pictorial illustrations. We will further study the methods of movement and locomotion in different animals.

This chapter deals with the concepts of light, shadow, and images. Here, we will learn the difference between an image and a shadow through activities and illustrations. We will also learn some precautions to be taken while conducting experiments.

In this chapter, we will learn the characteristic features of living organisms and compare them with non-living things. We will know about a microscope and its function. Further, we will also discuss some of the useful and harmful bacteria.