Science Process Skills Grade 3 - You and the Natural World

Grade 3 Science Process Skills

Science is about asking questions and finding answers.
People who are involved in science are called scientists. Scientists try to solve problems and explain them in a step-by-step manner.
Each step is called a process.

Reference: You and the Natural World 3 - Phoenix Publishing House

1. SCIENCE PROCESS SKILLS Ms. Jem’s Class

2. Science Process Skills Science is about asking questions and finding answers. People who are involved in science are called scientists. Scientists try to solve problems and explain them in a step-by-step manner. Each step is called a process.

3. OBSERVING Observing is a basic process skill that makes use of one or more senses. These organs are used to gather pieces of information and evidence.

4. Ears – Hearing or Audioception Ears are the auditory sense organs of our body. They help us to perceive sounds. Tongue – Taste or Gustaoception The tongue helps in perceiving various tastes and flavors. Eyes – Sight or Ophthalmoception These are the visual sensory organs in our body. These are sensitive to light images. Nose – Smell or Olfalcoception The nose is an olfactory organ. Our olfactory system helps us to perceive different smells. Skin – Touch or Tactioception Skin is the largest organ of our body. It is related to the sense of touch. The sense of touch is also referred to as tactioception .

5. OBSERVING Observing helps you raise questions about the things around you like: “Why are elephants big?” “Why is the sky blue?” ”Why is sugar sweet?””

6. A. Draw your sense organ in each box, then write the two objects that can be observed. 1. ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 2. ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 3. ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 4. ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 5. ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

7. COMPARING Comparing means identifying which characteristics are similar and different between objects.

8. COMPARING If you were asked to compare the two objects on the right, you would probably say that both objects are round and that they have the same color. However, they may differ in sizes,; the paper plate is big and the cotton balls are small.

9. B. Compare the grizzy bear and the teddy bear using a venn diagram. Grizzy bear Teddy bear SIMILARITIES DIFFERENCES DIFFERENCES

10. CLASSIFYING It is when we group objects and events based on their properties, characteristics, or traits. It is a process of examining properties common to a set of objects.

11. CLASSIFYING It is important for scientists to group organisms properly, like plants and animals, in order to understand them better.

12. LET’S TRY THIS! Scientists say that Earth is now slowly being polluted. Thus, it is important to practice simple ways to save Earth, such as waste segregation. Study carefully the list and segregate the waste into biodegradable and nonbiodegradable. Animal waste Foil pack Styrofoam Broken glass Fruit peeling Tin can Diapers Leftover food Tire Dried leaves Plastic bottle Wood

13. Biodegradable Nonbiodegradable

14. MEASURING Your observations tell what you actually see, hear, taste, smell, and feel. When you say “My pen is long,” you are making an observation. But how long is long?

15. MEASURING To answer this question, you need to use a measuring instrument. Measuring makes your observations more accurate. By measuring, you can tell exactly how long your pen is. When you measure, you compare the object you are observing to a standard, which may be an instrument like a ruler, a weighing scale or a thermometer.

16. Length A ruler and a meterstick are measuring instruments. Both measures the length of a material from end to end in centimeters (cm) or meters (m). A ruler can measure up to about 30 centimeters or 12 inches. 1 meter = 100 centimeter

17. Time Time is measured in minutes (min) or seconds (s) using a stopwatch or clock. For example, a runner can reach the finish line in 30 minutes. The time tells how long it takes for an athlete to reach the finish line. Second, year, decade, and century are also units of time.

18. Mass Mass is the amount of matter in an object. What is the mass of your science book? To answer this question, you use a measuring instrument called a platform balance. The mass of an object is expressed in grams (g)

19. Mass This volleyball has a mass of 200 g when inflated and 100 g when deflated.

20. Temperature Temperature is a measure of how hot or cold an object is. Ex. You use a thermometer to check the temperature of your body or a material. A clinical thermometer is used in clinics and hospitals. A laboratory thermometer is used in school science laboratories.

21. Temperature When you are sick, your body temperature is slightly higher than normal. The normal body temperature is 37 degrees Celsius ( °C ). At 38 °C, you already have a fever. During the summer months, the temperature of the surroundings ranges from 32 °C to 42 °C , while water begins to freeze at 0 °C .

22. Volume It is the amount of space occupied by a substance. There are many instruments that scientists use to measure specific volumes including graduated cylinder, buret , or pipette.

23. LET’S TRY THIS! A. Match the instruments in Column B to the property they measure in Column A. Write the letter of your answer on the space provided before each item. Column A Column B ___ 1. length a. Graduated cylinder ___ 2. mass b. Platform balance ___ 3. temperature c. Ruler ___ 4. time d. Stopwatch ___ 5. volume of liquid e. Thermometer

24. INFERRING Science tries to seek answers to many things around us. It seeks answers to when, how and why things happen.

25. INFERRING Inferring is a science process that seeks to explain one or more observations. It also means giving interpretation to what are perceived by the senses. It is also influenced by one’s experiences in life. INFERRING

26. INFERRING Observation Inference The flower pot has three colors – red, yellow, and blue. It think it was spray painted. The flower pot has a small crack along its side. Maybe a heavy object fell on it.

27. B. Comparing measurements: Compare the following measurements of the given pair of objects below. Write “>” if the object to the left is greater than the one to the right. Write “<” if the opposite the object to the left is less than the one to the right. And write “=” if both measurement is equal. 1. time: 1 year ____ 12 months 2. length: paper clip ____ notebook 3. speed: procession ____ ambulance 4. mass: 1 kilo of cotton ____ 1 kilo of nails 5. temperature: hot coffee ____ cold milk tea

28. PLANT A PLANT B Observe the two plants. What can you say about each plant? What can you infer from the given pictures?

29. COMMUNICATING Communicating means expressing one’s ideas, insights, and suggestions. It is also sharing results and findings of a study or an investigation. When you communicate, you give and receive information.

30. COMMUNICATING Tools such as pictures, symbols, tables, charts, and graphs are used to help in communicating and organizing data. Science laboratories communicate safety reminders using pictures and symbols.

31. COMMUNICATING When you see these images, you are reminded what to do and not to do. The following images mean: The first aid kit is here. There is eye hazard. Wear your safety gloves. There is skin hazard. Wear your safety guard. Do not eat or drink here. There is flammable material. Practice caution.

32. Let’s Try This! The Secret Message Form a group with 8 or 10 members. Let the members of the group form a straight line. Assign a member who will receive the initial message. Then, let the lead member pass the message by whispering it to the ear of the person next to him/her. Each member whispers what he/she hears to the next member in line. The last member of the group will reveal the message by saying it aloud. The group with the closest answer to the original message wins.

33. Guide Questions: Was the message delivered effectively? Did the message changed in the transmission? How will you improve your communication to make sure your message is received accurately?

34. Thank you! Hope you learn something new this week!