1. Essential Question: How do major organ systems work together in living organisms?
GSES7L2b: Develop and use a conceptual model of how cells are organized into tissues, tissues into organs, organs into systems, and systems into organisms.
GSES7L2c: Construct an argument that systems of the body interasct with one another to carry out life processes.
Instructional Approach(s): Teacher reviews the essential question and the standards that align to the essential question

2. The role of the Excretory System is to remove wastes from the body.
Instructional Approach(s): The teacher should present the information on the slide while the students record the role of the Excretory System on their graphic organizer sheet.

3. Organs that Excrete Waste
What it Excretes
Lungs
Carbon Dioxide
Kidney/Bladder
Urine
Large Intestine
Feces (food waste)
Skin
Excess water/Salt
Instructional Approach(s): The teacher should present the information in the slide while the students record the information on their own chart on the graphic organizer sheet

4. Skin Our Body sweats to maintain temperature
You may have noticed you sweat more in places like your feet, your hands or your forehead
This is because you have more sweat glands in those areas
Instructional Approach(s): The teacher should present the information on the slide

5. Write it Down
On a scratch sheet of paper write a brief statement explaining how this trash truck is similar to the organs in your excretory system and how it is different.
Instructional Approach(s): The teacher may want to use the “write it down” as a formative assessment to determine student mastery of the Excretory System