Math by the Month is a regular department of the journal. It features collections of short activities focused on a monthly theme. These articles aim for an inquiry or problem-solving orientation that includes at least four activities each for grade bands K—2, 3–4, and 5–6. In this issue, the problems present opportunities to reason about many mathematical topics, including patterns and grouping, fractions of a set, ratios, and elapsed time.
Liat Zippin, firstname.lastname@example.org, is a teacher in Aventura, Florida. She enjoys infusing literature, the arts, and real-life contexts into her instruction to engage children in mathematical thinking.
Edited by Mark Amador, email@example.com, who teaches seventhgrade mathematics at Aventura City of Excellence School in Aventura, Florida. E-mail problem collections for the editor to consider for future Math by the Month columns. See detailed submission guidelines at www.nctm.org/tcmdepartments. E-mail creative solutions and adapted problems to firstname.lastname@example.org for potential publication, noting Readers Exchange in the subject line.