DO NOW Date: 12/07 The function of the digestive system is to break down the food we eat for nutrients. Brainstorm as many structures of the digestive system as you can.

ESSENTIAL QUESTION: OBJECTIVES: How do the structures of the digestive system work together to process the food you eat? OBJECTIVES: -Review Presentation on the Digestive System -Digestive system notes to record the structures and functions of the digestive system

Digestive System Notes Glue Note Sheet to pg

Digestion Presentation Use your sheet to complete notes on the Digestive System. Digestion Prezi

Do NOW What are the similarities and differences between mechanical and chemical digestion? Mechanical Digestion Chemical Digestion

Mechanical Digestion Mechanical digestion is the physical break down of food into smaller pieces.

Mechanical Digestion EXAMPLE: CHEWING!

Mechanical Digestion EXAMPLE: Peristalsis: The squeezing of muscles in the digestive system which forms a wave of constriction that moves food along.

Chemical Digestion Chemical Digestion is the chemical break down of foods into simple molecules.

Chemical Digestion Example: Enzymes in your saliva and stomach begin breaking up molecules in your food. Stomach acid (Hydrochloric acid) also breaks down fats, proteins, and starch into much simpler molecules as shown in this diagram.

DO NOW Write the following sentences and fill in the blanks: Date: 12/10 Write down this week’s TEK from the chalkboard Write the following sentences and fill in the blanks: _________is an example of a physical reaction because______. _________is an example of a chemical reaction because______.

ESSENTIAL QUESTION: OBJECTIVES: How do the mechanical and chemical digestion work together to break down the food you eat? OBJECTIVES: -Complete Digestive System Lab to demonstrate and understand mechanical and chemical digestion.

Engage: Digestion 1. Put one cracker into your mouth. Hold it in your mouth for 10 seconds. Start recording your observations on your sheet. 2. Start to slowly chew the cracker. 3. Swallow the cracker. Pay attention to the way it feels to have the food travel down your esophagus.

Turn and Talk With your elbow partner: Discuss which forms of digestion (mechanical/chemical) were involved in eating your cracker. Be prepared to describe your thoughts with the class.

VIDEO Digestive System

Digestion Lab Set-Up A- Lab Clean Up Director B- Beaker Manager C- Lab Director D- Materials Manager

Digestion Lab Materials Managers: 1 Beaker with 150 mL of Cola 1 Ziploc bag 5 crackers 1 filter paper

Digestion Lab Place 5 crackers into a sealable bag. Pour in 150 mL of cola into the bag and zip the bag closed. Observe the crackers. Record any changes ln your sheet. “Pump” the bag for three minutes. Observe and record what happens to the crackers inside of the bag. Place filter paper on top of the beaker. Use the rubber band to keep the filter paper in place. Using the spoon, slowly pour out the cola and cracker mixture from the bag and into the filter paper.

Exit Ticket Complete the questions on the back of your lab sheet.

DO NOW Date: 12/12 Q: How are large molecules broken down during digestion for the body to use? Describe the following as a chemical or physical change? Food being chewed by teeth Food being broken down by the muscles of the stomach Saliva breaking down food during chewing Stomach acid and enzymes breaking down food in the stomach

ESSENTIAL QUESTION: How are large molecules broken down during digestion for the body to use? OBJECTIVES: “Meet Your Food” to understand the large molecules that you eat. Complete online simulation to understand how large molecules are broken down during digestion for your body to use.

ENGAGE: Why do we eat food? -TURN AND TALK -Be prepared to share

EXPLORE: “Meet Your Food” JIGSAW EXPERT GROUPS: A- Report to Table 1/5 Hamburger Patties (Protein) B- Report to Table 2/6 Hamburger Buns (Carbohydrates) C- Report to Table 3/7 Cheese (Fats) D- Report to Table 4/8 Lettuce and Tomato (vitamins/minerals)

EXPLORE: EXPERT GROUPS: Read the information assigned to your group. Prepare to share your information. 1)What large molecules are broken down when you eat your assigned food? 2)Where is it digested in the digestive system? 3)What smaller molecules are formed when the large molecule breaks down?

EXPLORE: Move back to your table group BUILD YOUR HAMBURGER: -Show your Hamburger Part to your table group -Share the molecules on the back -Place your Hamburger Part in the Center of the table and share your information (LETTUCE< PATTY< CHEESE< BUN)

EXPLAIN: Digestion Online Simulation You and a partner will use the online simulation to complete the “Journey Through the Digestive System” Graphic Organizer Voice Level 1 as you work

ELABORATE: QUESTION: Can ENZYMES and STOMACH ACID really digest large protein molecules into smaller AMINO acids. PROTEIN DIGESTION LAB: -Read the directions carefully -Complete the pre-lab when your test tubes are set up -Voice Level 2

Digestion Lab Set-Up A- Lab Clean Up Director B- Test Tube Manager C- Lab Director D- Materials Manager

ESSENTIAL QUESTION: OBJECTIVES: How do the structures of the digestive system work together to process the food you eat? OBJECTIVES: -Determine -Digestive system notes to record the structures and functions of the digestive system

Project Reminder Due TUESDAY December 18th!

EXIT TICKET: Pretend you are a green bean. Describe your journey through the digestive track using as many vocabulary words from your notes and lab as possible. Underline the vocabulary words from this lesson