Science Test Wednesday!

It's hard to believe we are already coming to the end of our 1st 9 weeks together.  The kids have spent their Science time learning about lab safety & equipment, body systems and healthy living.  We've built models, performed cool experiments, sung Schoolhouse Rock songs and safety raps, researched on Edmodo and spent lots of time talking about our learning.  We've been busy!  This Wednesday it will be time to show what they've learned!

Here's an overview of what they will be expected to know:

Science Common Assessment Review, 1^st 9 Weeks, 3^rd Grade

System Name	Major Parts	Function
Nervous System	Brain Spinal Cord Nerves	Sends messages from the brain to the body
Skeletal System	Bones Joints Skull Teeth	Provides support and protection.
Digestive	Esophagus Stomach Liver Small Intestine Large Intestine Rectum	Breaks down food to provide the body with energy and nutrients.
Respiratory	Larynx Trachea Lungs Diaphragm	Provides the body with oxygen and expels carbon dioxide.
Circulatory	Heart Veins	Transports oxygen and nutrients throughout the body in the blood.
Muscular	Muscles	Allows movement and flexibility.

1. What do the following measure?

Thermometer: temperature

Triple Beam Balance:  mass

Stopwatch: time

Ruler: length

Graduated Cylinder: volume

2. Are the following items systems?  Why?

Pencil Bag.  Yes, because it has parts (zipper, lining, holes, etc.) that work together to do a job (store pens, pencils, erasers, etc.)

Pen.  Yes, because it has parts (ink, shaft, ballpoint tip, etc.) that work together to make marks

Cotton Ball.  No, it has no parts

Kleenex.  No, it has no parts

Door.  Yes, it has parts (handle, lock, frame, wood, etc.) that work together to close off a room

3. How do the different food groups help your body systems stay healthy?

Grains are full of fiber which gives you energy and helps digest food.

Vegetables are full of vitamins, minerals and fiber, which helps you grow.

Fruits are full of vitamins, minerals and fiber which protect you from disease.

Dairy is full of calcium which helps build strong teeth and bones.

Meat, beans, fish and nuts are full of protein which helps build strong muscles.

4. How do the body systems work together?

Examples:       The brain sends a signal to your heart causing it to beat. 

                        The teeth begin the digestive process by breaking food into smaller parts.

                        Muscles push the food through the digestive system.

                        The lungs provide oxygen to the heart which pumps it to the muscles.

                        The long bones produce blood cells in the marrow.

                        The skull protects the brain.  The ribs protect the heart and lungs.

                       

5. How can you keep your body systems healthy?

Examples:        Wear a helmet to protect your brain when riding a bicycle.

                        Wear a seatbelt when riding in a car.

                        Get enough sleep!

                        Wash your hands regularly to prevent disease.

                        Eat healthy foods, low in fat and high in vitamins and minerals.

                        Monitor calories to maintain a healthy weight.

                        Don’t smoke or take drugs.

                        Exercise.

6. Lab safety practices expected at MRE are:

Examples:        Wait for instructions before handling materials

                        Follow teacher directions

                        Wear goggles for eye protection

                        Waft smells toward your nose

                        Do not taste anything without teacher permission

                        Return materials and clean your station at the end of lab

                        Get teacher help if there is an accident or spill

                        No running in the lab

                        Tie back long hair

                        Push up loose sleeves, tuck in loose clothes