Lesson+Development

- Once students reply to the do now question on what is cancer, if cancer pertains to the student personally and its effects of cancer, I will discuss: o  **__ What is Cancer  ? __**  §   Cancer is a condition that develops when normal cells are damaged in ways that cause them to reproduce in an unregulated manner. The changes in cellular behavior are caused by mutations; changes to the DNA of a cell.  §   These mutations enable the cancer cell to divide continuously, without the need for normal signals. In some cancers the unchecked growth results in a mass, called a **tumor.** Cancerous cells may invade other parts of the body, interfering with normal body functions. If normal body functions are impaired significantly, death may occur.  §  §   Which of the two images shows irregular/cancerous cells? o  **__ Cancer Statistics __** ·   The American Cancer Society estimates 170,000 US cancer deaths in 2007 are expected due to tobacco usage and another 185,000 are predicted due to other preventable cancers. ·   That’s a grand total of 355,000 potentially preventable cancer deaths in ONE YEAR! ·  ** 1 in 4 deaths ** in the US is caused by cancer o  **__ Causes of Cancer __** §  **Mutations** ·   Cancer is caused by mutations resulting from internal or external factors o   Internal: inherited mutations, spontaneous mutations o   External: tobacco, chemicals, radiation, infectious organisms §  ** Others ** ·   Some agents, such as viruses, can induce cancer without altering cellular DNA o  **__ Most Common Cancer __** §  Skin Cancer/ Carcinoma o  **__ Real Life Applications __** §  **  Questions for Students: What is the price of “beauty?”  ** ·   Who likes to be tan? o   Show pictures of what may happen to due to excess UV exposure. o   Show online video:  Skin Cancer the danger too much sun” media type="youtube" key="1qNQVseTUsY" height="364" width="445" ·   Who uses sunscreen? What SPF? o  A lternatives: fake tans, spray on tan/lotion ·   How can you make an impact? o  Tell friends and family o  Protect yourself
 * How will the lesson develop?** What will the students Explore? What will you explain?