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These discussion prompts ask students to think in more detail about lipids, their hydrogenation and related scientific areas.

Students will search the Science News archive for additional articles related to trans fats.

Students will culture yogurt bacteria with and without antibiotics to test the bacteria's sensitivity and then stain microscope slides to determine if the bacteria are gram-positive or gram-negative.

These discussion prompts focus on the nature of bacteria and types of antibiotics, as well as methods for dealing with antibiotic resistance.

These questions focus on student understanding of gram-negative bacteria and the bacteria's response to antibiotics.

These discussion prompts ask students to think about ways that different elements create varied results in battery design, and related redox reactions.

Students will search the Science News archive for stories related to battery research.

Based on the Science News article "Charging the future," these questions focus on battery design, how lithium-ion batteries compare with newer types and the nature of experimental design.

These discussion prompts cover the types of rocks and minerals found on Earth, and isotopes, their measurement and their applications.

These discussion prompts cover radiant energy coming to and from Earth, the effects of global warming on the land, ocean, atmosphere and on species, and possible methods of averting or adapting to climate change.

Students will test the effect of different conditions on lactase, an enzyme that catalyzes the conversion of milk sugar to simple sugar.

Students will test different types of catalysts and conditions for the light-producing luminol reaction.