STEM



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What does ‘allele’ mean?

The word allele, in the study of inheritance, means a single copy of a gene. It is pronounced uh-LEEL. Its usage implies that there are…


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What is a Punnett square?

Biologists who study inheritance patterns, genetic counselors, and you (apparently) need to bridge the gap between DNA and some of life’s questions, like “What crop…




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USA Biology Olympiad Prelims

The USA Biology Olympiad, sponsored by the Center for Excellence in Education, will be conducting the initial round of tests, administered in your high school,…



Raisins in 100 ml of water overnight

We have this problem: In an experiment, a group of students placed several raisins in a container with 100 milliliters of water. They covered the…


What is a stem-and-leaf plot?

This post is directed at content developers, elementary math. I would like you to develop a Voxitatis tutorial on this topic to help parents explain…