Laboratory activity circulatory system - have a heart model

1. MENTARI INTERCULTURAL SCHOOL
IB MIDDLE YEARS PROGRAM
Assessment Objective: Students make a model of the heart that shows its four chambers and the route
blood takes. They also assemble a wheel that illustrates how blood circulates around the body.
Introduction
The job of the circulatory system is to supply oxygen and food to every cell of the body via the blood.
The circulatory system is made up of the body’s blood pumping organ (the heart), the blood, and blood
vessels in which blood travels. In the center of the chest between the lungs is the heart, a four
chambered, mostly hollow muscle that squeezes every second or so. The heart receives blood from the
veins and pumps it though the arteries. The heart has two sides, left and right. Blood depleted of oxygen
comes into the right side of the heart. From there it is pumped to the lungs, where it picks up oxygen
and returns to the heart’s left side and is pumped out to the body. The heart is an amazing organ,
pumping thousands of gallons of blood every day over a lifetime. Blood is a liquid mixture of water, red
and white blood cells, minerals, mineral salts, enzymes, hormones, and food for cells and tissues (fats,
sugars, and proteins). Besides delivering needed food and oxygen to cells, blood picks up wastes, like
carbon dioxide. Blood cells are produced in the bones, and dead ones are removed by the spleen and
liver
Materials
3-foot-long piece of red and blue yarn, scissors, tape, colored pencils, crayons, or markers
Instructions
1. Cut out the heart along the solid black lines. Then cut out the four hatch lined ovals.
2. Hold one end of the blue yarn behind the far left FROM BODY hole and thread it
through. Then feed in through the TO LUNGS hole. Allow equal amounts of slack to
hang out of each hole.
3. Tape down the yarn, as shown.
4. Repeat steps 3 and 4 with the red yarn and the right side.
Student Name: CN 1st
Term SY 2018 - 2019
Grade Level: 8 Date: Parent’s Signature
Section: Teacher: Armand Anthony L. Galicia
Formative Assessment - Laboratory Activity Unit/Topic: Circulatory System – Have a Heart Model