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In this four-day activity, learners grow bacteria and/or fungi from a variety of locations and compare the results.

In this activity, learners make balloon models of disease-causing bacteria.

In this lab (Activity #1 on page), learners compare bacteria growth on two petri dishes containing nutrient agar: one that has been touched by a finger washed only with water and one that has been tou

In this activity, learners use sets of cards to assign microorganisms to different groups.