When you're finished, you take a last drink of milk, wipe your mouth, and head to your next class.
To begin to explore where nutrients come from, as well as their importance for particular tasks in the body. Context Students are starting to view the body as a system in these grades. Parts of the digestive system important thing they should start to understand is that in order for their "systems" to properly function, they need energy and materials from food as the benchmark states.
Though students know they must eat to live, they may not have made the distinct connections between food and the body properly repairing itself, or food and growth; even a connection as simple as a lack of iron or carbohydrates making one tired.
This lesson will focus on the digestive system in order to address the latter part of the benchmark—that undigested food is eliminated. In addition, it will begin to explore where nutrients come from and their importance for particular tasks in the body. This Science NetLinks lesson is the first of a three part series.
It works in conjunction with Nutrition 2: Good Food, Good Health, a lesson that teaches about the food groups and how vitamins and minerals help the body function properly, and Nutrition 3: Younger elementary school students might think that the contents of the body is what they have seen being put into it or coming out of it.
Students know food is related to growing and being strong and healthy, but they are not aware of the physiological mechanisms. In upper elementary, students can list a large number of organs and by 5th grade, "students know that food undergoes a process of transformation in the body.
Ask questions such as: What have you eaten today? Why did you choose to eat those foods? What happened to your food after you ate it?
Students should naturally begin talking about the digestive system in response to the final question listed above. Let them know that food and the digestive system are the topics for this lesson.
Once students have done some preliminary exploration of the digestive system, ask these questions: Where do people get energy? They get energy from food. How does the energy from food get into the body?
Nutrients flow into the bloodstream from the small intestine What happens to the indigestible parts of the food? Leftovers go into the large intestine and are eliminated. Next, brainstorm answers to these questions. There are many answers, many of which are not very obvious, but this will get students thinking beyond the basic processes of the digestive system.
What do you think your body uses the energy from food for? These answers can include just about anything the body does. The goal is to demonstrate that without food, the body would not function properly and if it went without food for a prolonged period, the health of that person would deteriorate.
If your body didn't get enough nutrients, what do you think would happen? Ask students if they would grow, or think as well. Try to get students to think about this question in relation to junk food. Development In this part of the lesson, students will learn about the digestive system in more detail.
Depending on your students' ability, this article can be read online or printed out and read in class. Also, it is not necessary to click on the links within the text for this lesson. Provide students with the Digestive System student sheet.
They should get into groups and cut out parts of the digestive system from colored construction paper as they make their way through the article.
On each organ, students can write a one- to two-sentence description of the organ's purpose. In the end, they will have a recreated digestive system of their own. Another way to approach this is for you to hand each group a "puzzle" which would consist of the different parts of the digestive system already cut out.
Students could sequence the digestive system as they read through the site. This will give them the big picture. After this exercise, students should write short answers to these questions: Where in the digestive system do nutrients enter the body?
What happens to the indigestible parts of food?Paul Andersen starts with a brief description of feeding methods. He then details all of the major parts within the human digestive system.
This tour starts in the mouth, moves down the esophagus, through the stomach, small intestine, colon and rectum.
Mitochondria - Turning on the Powerhouse Mitochondria are known as the powerhouses of the cell. They are organelles that act like a digestive system which takes in nutrients, breaks them down, and creates energy rich molecules for the cell.
The biochemical processes of the cell are known as cellular attheheels.com of the reactions involved in cellular respiration happen in the mitochondria. The digestive system is a group of organs working together to break down food into tiny molecules.
Digestion of food is important so that we can obtain energy from our food. Even before you eat, when you smell a tasty food, see it, or think about it, digestion begins. Find out how the digestive system works, from start to finish, in this video!
Digestive system is the food processing system of human body. The whole digestive system is in the form of a long, hollow, twisted and turned tube, called the alimentary canal, which starts from the oral cavity and ends at the anus.
The human digestive system is a series of organs that converts food into essential nutrients that are absorbed into the body and eliminates unused waste material. It is essential to good health.