What are the different ways to test for pH? First, scholars explore the pH scale and a common way to test for acidity and alkalinity. Then, they learn about the importance of pH in food safety and why variance in pH could potentially...

Are you an XX or an XY? Budding scientists learn about cellular fertilization and the determination of gender in a thorough online lesson. They follow their study with a set of interactive reflection questions.

Humans, fruit flies, and reptiles have their own rules where sex chromosomes are concerned. Scholars flip through a slide show offering an explanation of the chromosomes that determine the sex of different species. What is female in one...

Food storage matters! Scholars learn how the amount of water in corn can affect its rate of spoilage. They create a control group, then test three corn samples stored in three different locations for water activity. As a result of the...

Students complete studies to learn about tolerance for gender groups. In this gender study instructional activity, students are divided into gender groups and discuss how it feels to be grouped that way. Students brainstorm messages...

At one point, all mammals carried only two color receptors, but now most humans carry three. An informative presentation and hands-on activity demonstrate how this evolved through genetics. By participating in the activity, pupils...

Young scholars examine their own strengths and weaknesses and try to determine if it is a result of nature, nuture or both. After reading an article, they discuss how gender may or may not account for differences in intelligence. They...

Teach the class how to use a microscope to identify bacteria in food. Scholars explore the different parts of the microscope and learn how to determine total magnification. They walk step-by-step through the procedure of preparing slides...

Interpreting graphs is an essential skill for young scientists. An interactive online lesson gives individuals an opportunity to review the components of a graph and learn to read and interpret the shape of a graph. The lesson includes...

Nitrogen is an essential element for productive farming. An interactive lesson explores the chemical makeup of different fertilizers and their corresponding nitrogen content. The interactive challenges individuals to complete...

Students, in groups, examine in depth one aspect of forensic archaeology to determine the skeleton's age, gender, and possible cause of death. To do so, students must first explain what is involved in each aspect of forensic archaeology.

Discusses many details pertaining to sexual selection and gender differences in sexual selection. The rationale behind the increased female investment in the process is discussed. Provides many examples of the sexual selection process.

Our genes are inherited from our parents, and the different combinations of these genes make us unique. Genetic inheritance controls the characteristics of all living things. This lesson focuses on the inheritance of biological sex in...

Monoecious refers to organisms having both male and female characteristics in a single individual, i.e., a hermaphrodite, while dioecious organisms have separated genders. The two terms are compared for their similarities an differences...