In this article, a low-cost and pocket-sized setup for measuring CO[subscript 2] is presented. This setup is based on Arduinos, making it economic and open to modifications or improvements that satisfy other needs. It is composed of an Arduino board, a CO[subscript 2] sensor, an SD-card module, and a control panel. The device has been tested in…

In this article, the author presents and discusses activities that use a phenomena-first, guided inquiry approach to teach important concepts related to plant function, as well as the history and nature of scientific inquiry. These activities are intended for use with students in grades 3-8, as well as in elementary science methods courses. The…

Samara (winged seeds from maple and ash trees) can be used for open-ended inquiry or a series of directed science activities. Attributes, observations/inferences, drawing, motion, floating, seed structure, creative design, and measurement are some of the suggestions for classroom use of these seeds. (DH)