Modifications to a first- and second-grade STEAM activity, Elephant Toothpaste, highlight ways to emphasize mathematical thinking by running multiple experiments, posing mathematical questions, and having students make both qualitative and quantitative observations. Contributors to the iSTEM department share ideas and activities that stimulate student interest in the integrated fields of science, technology, engineering, and mathematics (STEM) in K–grade 5 classrooms.

Contributor Notes

Emily Dardis, emily.dardis@ecat.montana.edu, is a preservice elementary school teacher who facilitates an afterschool STEAM club at Morningstar Elementary School in Bozeman, Montana. She is interested in using engaging activities to inspire young girls to pursue STEM fields.

Megan H. Wickstrom, megan.wickstrom@montana.edu, is an assistant professor of mathematics education at Montana State University in Bozeman. She is interested in supporting teachers in developing rich mathematical tasks that promote students' creativity and mathematical understanding.

Edited by Melissa M. Soto, melissa.soto@mail.sdsu.edu, an assistant professor of mathematics education in the School of Teacher Education at San Diego State University in California

Mollie H. Appelgate, mollie@iastate.edu, a mathematics teacher educator at Iowa State University in Ames. Contributors to the iSTEM department share ideas and activities that stimulate student interest in the integrated fields of science, technology, engineering, and mathematics (STEM) in K-5 classrooms.

(Corresponding author is Dardis emily.dardis@ecat.montana.edu)(Corresponding author is Wickstrom megan.wickstrom@montana.edu)(Corresponding author is Soto melissa.soto@mail.sdsu.edu)(Corresponding author is Appelgate mollie@iastate.edu)
Teaching Children Mathematics

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