1. The document covers three science units: our health, sensitivity and coordination, and the locomotor system. 2. The first unit discusses healthy habits like eating a balanced diet, getting enough sleep, washing hands, and exercising. It also covers pathogens like bacteria and viruses, and how vaccines can prevent infectious diseases. 3. The second unit describes the five senses and their corresponding organs - eyes (sight), ears (hearing), skin (touch), tongue (taste), and nose (smell). It also explains how the central nervous system including the brain and spinal cord works to coordinate the senses. 4. The third unit outlines the skeletal system including important bones, joints, and muscles. It

3. -To stay healthy,we must keep healthy habits ,like

4. Eat five meals a day and never skip breakfast .

5. Sleep at least nine hours a day, and even more if we exercise or play sports.

6. We need to rest to stay healthy

7. Wash your hands with soap and water before eating. Brush our teeth and Take a shower every day.

8. Keep a varied diet with . Avoid sweets and fats . adequate amounts of all foods

9. Exercising improves our health

10. Do not stay too long indoors with smoke or many people .

11. -Bacteria are unicelular living things. They are simple structures and they can reproduce very quickly

12. A virus is not a living thing, but it needs living cells to carry out its life processes.

13. - A vaccine is when a doctor introduces a pathogenic Microorganism in yor organism that causes a disease into A healthy body.

15. There are five senses

16. The organ for the sense of sight is the eye. The main part of the eye is the eyeball

17. The organ for the sense of hearing is the ear. It is made up of the outer, middle and Inner ear.

18. The organ for the sense of touch is the skin. It has three Layers: the epidermis, the dermis and the hypodermis.

19. The organ for the sense of taste is the tongue. Receptors for different flavours are In the taste buds.

20. The organ for the sense of smell is the nose. Receptors of smell are in the pituitary

21. The central nervous system is made up of :Brain (cerebrum,cerebellum ,brain stem, Spinal cord: Protected by vertebrae

22. The brain is made up of cerebrum, cerebellum and brain stem.

23. It is a brain

24. Neurons are the cells of the nervous system. They are made up of a cell body,dendrites and axons

26. The skeleton is made up of bones,joins and cartilage

27. The musculature is made up of muscles. Tendons connect muscles and bones

28. We classify the bones of the skeleton by where they are in the body. - Head bones - Trunk bones - Limb bones

29. Joints are the unions between two or more bones. They can be fixed, semi-movable and movable.

30. T The muscles of the body are all over the head, trunk and limbs.

31. Tendons are the structures that connect bones to muscles

32. THE END Thank you