Postscript items are designed as rich “grab-and-go” resources that any teacher can quickly incorporate into their classroom repertoire with little effort and maximum impact. In this article, classroom clocks are used as an effective tool to support student understanding of basic number, fraction, and geometry concepts.

Contributor Notes

Jody Guarino, jguarino@uci.edu, teaches preservice teachers at University of California, Irvine, and supports teachers throughout Orange County, California, in her role as mathematics coordinator in the Orange County Department of Education. She is interested in teacher and student learning of mathematics.

Edited by Martha Hildebrandt, mhildebrandt@chatham.edu, who teaches undergraduate and graduate mathematics education and mathematics courses at Chatham University in Pittsburgh, Pennsylvania

Cathery Yeh, catheryy@uci.edu, a graduate student in the School of Education at the University of California, Irvine. Submit your quick game, puzzle, activity, or instructional strategy along with suggestions for how this idea can be used by teachers of different grade bands (K–1, 2–3, 4–6). Send submissions of no more than 250 words to this department by accessing tcm.msubmit.net. See detailed submission guidelines for all departments at www.nctm.org/tcmdepartments.

(Corresponding author is Guarino jguarino@uci.edu)(Corresponding author is Hildebrandt mhildebrandt@chatham.edu)(Corresponding author is Yeh catheryy@uci.edu)
Teaching Children Mathematics

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