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In this activity on page 3 of the PDF, learners visualize the relative size and structural differences between microbes that have the potential to cause disease.

$10 - $20 per group Ages 11 - 18 1 to 2 hours
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This activity was designed for blind learners, but all types of learners can use it to investigate how, in a one-celled organism such as a bacterium, the division of cells increases the number of cell

$1 - $5 per student Ages 8 - 14 10 to 30 minutes
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Build a fruit fly trap out of a 2-liter plastic bottle and some rotten fruit! Fruit flies are easy to catch in warm weather. Once you catch some, you will be able to see their life cycle up-close.

1 cent - $1 per student Ages 4 - 11 1 to 4 weeks
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This activity was designed for blind learners, but all types of learners can have a tactile opportunity to construct a karyotype, an organized model of an organism’s chromosomes, conveying the chromos

$1 - $5 per student Ages 8 - 14 10 to 30 minutes