Data collected in many biology laboratory classes are on ratio or interval scales where the size interval between adjacent units on the scale is constant, which is a critical requirement for analysis with parametric statistics such as t-tests or analysis of variance. In other cases, such as ratings of disease or behavior, data are collected on…

Nitrogen- or phosphorus-based fertilizers, used in agriculture, can run off into nearby waterways during periods of heavy rain or high flow and cause harmful blooms (Paerl et al. 2016), low oxygen (Joyce 2000), and decreased biodiversity (Sebens 1994). Studies of the effects wetlands can have on water and habitat quality (Verhoeven and Meuleman…

Civilization simply would not exist without plants, yet their importance is often overlooked. As the nation's ability to respond to the botanical challenges associated with food production, climate change, invasive species, and biodiversity loss continues to decrease (Kramer, Zorn- Arnold, and Havens 2010), educators must discourage this…

This column presents ideas and techniques to enhance science teaching. In the "Talking Window Garden" project, students create "smart" plant pots that use sensors to collect and analyze data on the health of their plants. The Talking Window Garden project was a collaborative effort between an elementary teacher who wanted to…

What if you could challenge your second graders to design an outdoor STEM classroom with a butterfly garden, birdbath, and sundial? With this volume in the "STEM Road Map Curriculum Series," you can! "Investigating Environmental Changes" outlines a journey that will steer your students toward authentic problem solving while…

Cell water relationships are important topics to be included in cell biology courses. Differences exist in the control of water relationships in plant cells relative to control in animal cells. One important reason for these differences is that turgor pressure is a consideration in plant cells. Diffusion and osmosis are the underlying factors…

This set of botany demonstrations is a continuation of the inquiry-based lecture activities that provide realistic connections to the history and nature of science and employ technology in data collection. The demonstrations also provide examples of inquiry-based teaching practices in the life sciences. (Contains 5 figures.) [For Part 1, see…

The "Under the Mistletoe" project was developed to capitalize on student curiosity about the American Christmas Mistletoe plant and draw learners into an engaging, inquiry-based exercise that incorporates numerous life science standards and collaborative research. By collecting data on host and nonhost tree size, location, and number of mistletoe…

Describes an experiment to investigate chemical changes, pH, dissolved oxygen content, light intensity, and temperature in water containing aquatic plants. (MKR)

Presents two experiments in which students examine the effects of touching and shaking on plant growth in common bush beans. (MDH)