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Science topics for primary 3 by Mind Map: Science topics for primary
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Science topics for primary 3

Body System

digestive system

function, It's function to break down our food.

parts of the digestive system and how they work, mouth, tongue, rolls the food into a ball,making it easier to swallow, teeth, grinds and tears down our food, saliva, breaks down our food into simpler substances, gullet, brings down the food, stomach, churns our food and digests a little food, small intestine, digests our food into the bloodstream, large intestine, passes out undigested food, anus, pass out our waste,faeces

respiratory system

function, It's function is to help us breathe and our exchange of gases.

parts of the respiratory system and how they work, nose, take in air, windpipe, sends air to our lungs, lungs, helps us to exchange gases

skeletal system

function, It's function is to give our body shape, It's function is to protect our delicate organs, It's function is to help us with our movement.

parts of the skeletal system and how they work, joints, enable us to bend our body, ribcage, protects our heart and lungs, skull, protects our eyes and brain

muscular system

function, It's function is to help us move.

parts of the muscular system and how they work, muscles, enable us to move

circulatory system

function, It's function is transport blood through our body

parts of the circulatory system and how they work, heart, pumps blood through our body, veins, transports blood, blood vessels, also transports blood

diversity

Things

Living Things, animals, mammals, birds, fish, insects, plants, flowering plants, reproduce by seeds, non-flowering plants, fern, moss, reproduce by spores, fungi, feed on dead plants and animals, do not make their own food, eg.mushroom,black fungus, micro-organisim, bacteria, characteristics of living things, need air,water and food, respond to changes, grow, reproduce, move by itself, die

non-living things, characteristics of non-living things, don't need air,water and food, don't respond to changes, don't grow, don't reproduce, don't die, once alive or natural, leather, cotton, wood, never alive or man-made, glass, metal, plastic

magnets

types of magnets

bar magnet

U-shaped magnet

rod magnet

horseshoe magnet

ring magnet

button magnet

what does a magnet have?

poles that represent the north-south

information

unlike poles attract

like poles repel

things it can/cannot attract

magnets can only attract magnetic materials-magnetic metals, examples: iron,steel,nickel

magnet cannot attract non-magnetic materials-non-metals, examples: copper,silver,aluminum

magnets cannot attract all metals-non-magnetic metals, examples: wood,plastic,fabric

magnets are usually used in a compass.

a compass looks like this

a magnet when allowed to turn freely,will point to a north-south direction.

plant system

leaves

Makes food for the plant

stem

Transports water and food for plant

roots

Take in water and minerals for plant

holds the plant firmly

what is a system?

each part of a system has a function

the parts must work together

a system needs all parts to work properly