Assuming 8 th graders have just completed a lesson on the periodic table, create an introductory lesson of a unit on atoms using the 5E’s Focus on introducing basic atomic components: proton, neutron, electron.
INTRODUCE BACTERIA DAY: ENGAGE: -Ask students what they remember from the lesson about the growth conditions of Bacteria. (clicker activity or short matching exercise) EXPLORE: (Talk about the importance of sterility) -Provide the students with sterile swabs and allow them to investigate their environment. (the greenway, areas around the school, themselves) -Have students document where swabbed -Materials needed: Sterile swabs, agar plates, petri dishes, incubator, and hydrogen peroxide. EXPLAIN: -Explain to the students how scientists determine what they find. -Explain growth media and fit the needs of the type of organism they want to grow. -Explain the importance of sterility. Have the students explain ways that scientist can prevent contamination. EXTEND: -Before growth media, what did scientist do to grow bacteria? EVALUATE: Test students on the importance of sterility and the practices that they can do to prevent contamination.