China Naming Network - Auspicious day query - 20 17 what does the first volume of the science textbook for the fourth grade of primary school include?

20 17 what does the first volume of the science textbook for the fourth grade of primary school include?

Chapter I, Dissolution

Water can dissolve some substances.

Lesson 2 How does water dissolve matter?

Lesson 3 Dissolution between liquids

Lesson 4 Solubility of Different Substances in Water

Lesson 5 Fast and Slow Dissolution

Lesson 6 How much salt can a glass of water dissolve?

Lesson 7 the method of separating salt from water

The second chapter, sound.

Listen to the sound

Lesson 2 How does sound come about?

Lesson 3 the change of sound

Lesson 4 Explore the Pitch Change of Ruler

Lesson 5 How does sound spread?

Lesson 6 How do we hear the sound?

Protect our hearing.

Chapter III, Weather

We care about the weather.

Lesson 2 Weather Calendar

Lesson 3 temperature and air temperature

Lesson 4 Wind Direction and Wind Speed

Lesson 5 Measurement of Rainfall

Lesson 6 Cloud Observation

Lesson 7 summarizes our weather observation.

Chapter IV Our Bodies

Body structure

Lesson 2 bones, joints and muscles

Lesson 3 What happens when you jump (1)

Lesson 4 What happens when you jump (2)

Lesson 5 Food Travel in the Body

Lesson 6 Changes of Oral Cavity

Lesson 7 Take care of our bodies.